Explanation Property used: Distributive property: If a , b and c are real numbers, then a ( b + c ) = a ⋅ b + a ⋅ c and ( a + b ) c = a ⋅ c + b ⋅ c . Calculation: The given equation is x 2 ( 2 x + 1 ) + 40 = ( x 2 − 8 ) ( x − 5 ) . Solve the equation x 2 ( 2 x + 1 ) + 40 = ( x 2 − 8 ) ( x − 5 ) for x as follows. x 2 ( 2 x ) + 1 ( x 2 ) + 40 = ( x ) ( x 2 − 8 ) − ( 5 ) ( x 2 − 8 ) ( Distributive property ) x 2 ( 2 x ) + 1 ( x 2 ) + 40 = ( ( x ) x 2 − ( x ) 8 ) − ( ( 5 ) x 2 − ( 5 ) 8 ) 2 x 3 + x 2 + 40 = x 3 − 8 x − 5 x 2 + 40 2 x 3 + x 2 + 40 − x 3 + 8 x + 5 x 2 − 40 = 0 Combine like terms and simplify further ( 2 x 3 − x 3 ) + ( x 2 + 5 x 2 ) + ( 8 x ) + ( 40 − 40 ) = 0 x 3 + 6 x 2 + 8 x = 0 x ( x 2 + 6 x + 8 ) = 0 ( Factor out x ) x ( x 2 + 4 x + 2 x + 8 ) = 0 Factor the equation x ( x 2 + 4 x + 2 x + 8 ) = 0 as follows. x [ x ( x + 4 ) + 2 ( x + 4 ) ] = 0 x [ ( x + 4 ) ( x + 2 ) ] = 0 x ( x + 4 ) ( x + 2 ) = 0 x = 0 or x + 4 = 0 or x + 2 = 0 Solve the factor x + 4 = 0 for x . x + 4 − 4 = 0 − 4 ( Subtract 4 from both sides ) x = − 4 Solve the factor x + 2 = 0 for x . x + 2 − 2 = 0 − 2 ( Subtract 2 from both sides ) x = − 2 That is, the solutions are x = − 4 , − 2 , 0

4th Edition

ISBN: 9780134556079

Author: Sullivan, Michael, III, Struve, Katherine R., Mazzarella, Janet.

Publisher: Pearson,

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Chapter 13, Problem 8CUR

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To solve: The equation x2(2x+1)+40=(x2−8)(x−5).

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Chapter 13, Problem 7CUR

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Chapter 13 Solutions

Elementary & Intermediate Algebra

Ch. 13.1 - A(n) _____ is a function whose domain is the set...Ch. 13.1 - Prob. 2E Ch. 13.1 - Prob. 3E Ch. 13.1 - Prob. 4E Ch. 13.1 - Prob. 5E Ch. 13.1 - Prob. 6E Ch. 13.1 - Prob. 7E Ch. 13.1 - Prob. 8E Ch. 13.1 - Prob. 9E Ch. 13.1 - Prob. 10E

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Prob. 57E Ch. 13.1 - Prob. 58E Ch. 13.1 - Prob. 59E Ch. 13.1 - Prob. 60E Ch. 13.1 - Prob. 61E Ch. 13.1 - In Problems 5962, a sequence is defined...Ch. 13.1 - Prob. 63E Ch. 13.1 - Prob. 65E Ch. 13.1 - Prob. 66E Ch. 13.1 - Prob. 67E Ch. 13.1 - Prob. 68E Ch. 13.1 - Prob. 69E Ch. 13.1 - Prob. 70E Ch. 13.1 - Prob. 71E Ch. 13.1 - Prob. 72E Ch. 13.1 - Prob. 73E Ch. 13.1 - Prob. 74E Ch. 13.1 - Prob. 75E Ch. 13.1 - Prob. 76E Ch. 13.1 - Prob. 77E Ch. 13.1 - Prob. 78E Ch. 13.1 - Prob. 79E Ch. 13.1 - Prob. 80E Ch. 13.1 - Prob. 81E Ch. 13.1 - Prob. 82E Ch. 13.1 - Prob. 83E Ch. 13.1 - Prob. 84E Ch. 13.1 - Prob. 85E Ch. 13.1 - Prob. 86E Ch. 13.1 - Prob. 87E Ch. 13.1 - Use technology to find the sum. k=18[(1)kk]Ch. 13.2 - In a(n) _______ sequence, the difference between...Ch. 13.2 - Prob. 2E Ch. 13.2 - Prob. 3E Ch. 13.2 - Prob. 4E Ch. 13.2 - Prob. 5E Ch. 13.2 - Prob. 6E Ch. 13.2 - Prob. 7E Ch. 13.2 - Prob. 8E Ch. 13.2 - Prob. 9E Ch. 13.2 - Prob. 10E Ch. 13.2 - Prob. 11E Ch. 13.2 - Prob. 12E Ch. 13.2 - 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Prob. 59E Ch. 13.2 - Prob. 60E Ch. 13.2 - Prob. 61E Ch. 13.2 - Prob. 62E Ch. 13.2 - Prob. 63E Ch. 13.2 - Prob. 64E Ch. 13.2 - Prob. 65E Ch. 13.2 - Prob. 66E Ch. 13.2 - Prob. 67E Ch. 13.2 - Prob. 68E Ch. 13.2 - Prob. 69E Ch. 13.2 - Prob. 70E Ch. 13.2 - Prob. 71E Ch. 13.2 - Prob. 72E Ch. 13.2 - Prob. 73E Ch. 13.2 - Compute f(2)f(1), f(3)f(2), and f(4)f(3) for each...Ch. 13.2 - In Problems 75-78, use technology to find the sum...Ch. 13.2 - Prob. 76E Ch. 13.2 - Prob. 77E Ch. 13.2 - In Problems 75-78, use technology to find the sum...Ch. 13.3 - In a(n) __ sequence, the difference between...Ch. 13.3 - Prob. 2E Ch. 13.3 - Prob. 3E Ch. 13.3 - Prob. 4E Ch. 13.3 - Prob. 5E Ch. 13.3 - In Problems 5-7, determine whether the sequence is...Ch. 13.3 - Prob. 7E Ch. 13.3 - Prob. 8E Ch. 13.3 - Prob. 9E Ch. 13.3 - Prob. 10E Ch. 13.3 - Prob. 11E Ch. 13.3 - Prob. 12E Ch. 13.3 - Prob. 13E Ch. 13.3 - Prob. 14E Ch. 13.3 - Prob. 15E Ch. 13.3 - Express 0.2 as a fraction in lowest terms.Ch. 13.3 - Redo Example 9 if the marginal propensity to...Ch. 13.3 - 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Now add the repeating decimals...Ch. 13.3 - Prob. 104E Ch. 13.3 - Prob. 105E Ch. 13.3 - Prob. 106E Ch. 13.3 - Prob. 107E Ch. 13.3 - Prob. 108E Ch. 13.4 - If n 2 is an integer, then n! =...Ch. 13.4 - Prob. 2E Ch. 13.4 - Prob. 3E Ch. 13.4 - Prob. 4E Ch. 13.4 - Prob. 5E Ch. 13.4 - Prob. 6E Ch. 13.4 - Prob. 7E Ch. 13.4 - Prob. 8E Ch. 13.4 - Prob. 9E Ch. 13.4 - Prob. 10E Ch. 13.4 - In Problems 11-18, evalute each factorial...Ch. 13.4 - Prob. 12E Ch. 13.4 - Prob. 13E Ch. 13.4 - Prob. 14E Ch. 13.4 - Prob. 15E Ch. 13.4 - Prob. 16E Ch. 13.4 - Prob. 17E Ch. 13.4 - Prob. 18E Ch. 13.4 - Prob. 19E Ch. 13.4 - Prob. 20E Ch. 13.4 - Prob. 21E Ch. 13.4 - Prob. 22E Ch. 13.4 - Prob. 23E Ch. 13.4 - Prob. 24E Ch. 13.4 - Prob. 25E Ch. 13.4 - Prob. 26E Ch. 13.4 - Prob. 27E Ch. 13.4 - Prob. 28E Ch. 13.4 - Prob. 29E Ch. 13.4 - In Problems 23-38, expand each expression using...Ch. 13.4 - Prob. 31E Ch. 13.4 - Prob. 32E Ch. 13.4 - Prob. 33E Ch. 13.4 - Prob. 34E Ch. 13.4 - Prob. 35E Ch. 13.4 - Prob. 36E Ch. 13.4 - Prob. 37E Ch. 13.4 - Prob. 38E Ch. 13.4 - Prob. 39E Ch. 13.4 - Prob. 40E Ch. 13.4 - Prob. 41E Ch. 13.4 - Prob. 42E Ch. 13.4 - Prob. 43E Ch. 13.4 - Prob. 44E Ch. 13.4 - Prob. 45E Ch. 13.4 - Prob. 46E Ch. 13.4 - Prob. 47E Ch. 13.4 - Prob. 48E Ch. 13.4 - Prob. 49E Ch. 13.4 - Prob. 50E Ch. 13.4 - Prob. 51E Ch. 13.4 - Prob. 52E Ch. 13.4 - Prob. 53E Ch. 13.4 - Prob. 54E Ch. 13.4 - Prob. 55E Ch. 13.4 - If h(x) = 2x5 + 5x4, find h(a + 3) with the aid of...Ch. 13 - In Problems 16, determine if the sequence is...Ch. 13 - Prob. 2PCT Ch. 13 - Prob. 3PCT Ch. 13 - Prob. 4PCT Ch. 13 - Prob. 5PCT Ch. 13 - Prob. 6PCT Ch. 13 - Prob. 7PCT Ch. 13 - Prob. 8PCT Ch. 13 - Prob. 9PCT Ch. 13 - Prob. 10PCT Ch. 13 - Prob. 11PCT Ch. 13 - Prob. 12PCT Ch. 13 - In problem 1315, find the indicated sum. 13....Ch. 13 - Prob. 14PCT Ch. 13 - Prob. 15PCT Ch. 13 - Prob. 16PCT Ch. 13 - Prob. 1RE Ch. 13 - Prob. 2RE Ch. 13 - Prob. 3RE Ch. 13 - Prob. 4RE Ch. 13 - Prob. 5RE Ch. 13 - Prob. 6RE Ch. 13 - Prob. 7RE Ch. 13 - Prob. 8RE Ch. 13 - Prob. 9RE Ch. 13 - Prob. 10RE Ch. 13 - Prob. 11RE Ch. 13 - Prob. 12RE Ch. 13 - Prob. 13RE Ch. 13 - Prob. 14RE Ch. 13 - Prob. 15RE Ch. 13 - Prob. 16RE Ch. 13 - Prob. 17RE Ch. 13 - Prob. 18RE Ch. 13 - Prob. 19RE Ch. 13 - Prob. 20RE Ch. 13 - Prob. 21RE Ch. 13 - Prob. 22RE Ch. 13 - Prob. 23RE Ch. 13 - Prob. 24RE Ch. 13 - Prob. 25RE Ch. 13 - Prob. 26RE Ch. 13 - Prob. 27RE Ch. 13 - Prob. 28RE Ch. 13 - Prob. 29RE Ch. 13 - Prob. 30RE Ch. 13 - Prob. 31RE Ch. 13 - Prob. 32RE Ch. 13 - Prob. 33RE Ch. 13 - Prob. 34RE Ch. 13 - Prob. 35RE Ch. 13 - Prob. 36RE Ch. 13 - Prob. 37RE Ch. 13 - Prob. 38RE Ch. 13 - Prob. 39RE Ch. 13 - Prob. 40RE Ch. 13 - Prob. 41RE Ch. 13 - Prob. 42RE Ch. 13 - Prob. 43RE Ch. 13 - Prob. 44RE Ch. 13 - Prob. 45RE Ch. 13 - Prob. 46RE Ch. 13 - Prob. 47RE Ch. 13 - Prob. 48RE Ch. 13 - Prob. 49RE Ch. 13 - Prob. 50RE Ch. 13 - Prob. 51RE Ch. 13 - Prob. 52RE Ch. 13 - Prob. 53RE Ch. 13 - Prob. 54RE Ch. 13 - Prob. 55RE Ch. 13 - In Problems 5356, find the sum of each geometric...Ch. 13 - Prob. 57RE Ch. 13 - Prob. 58RE Ch. 13 - Prob. 59RE Ch. 13 - Prob. 60RE Ch. 13 - Prob. 61RE Ch. 13 - Prob. 62RE Ch. 13 - Prob. 63RE Ch. 13 - Prob. 64RE Ch. 13 - Prob. 65RE Ch. 13 - Prob. 66RE Ch. 13 - Prob. 67RE Ch. 13 - Prob. 68RE Ch. 13 - Prob. 69RE Ch. 13 - Prob. 70RE Ch. 13 - Prob. 71RE Ch. 13 - Prob. 72RE Ch. 13 - Prob. 73RE Ch. 13 - Prob. 74RE Ch. 13 - Prob. 75RE Ch. 13 - Prob. 76RE Ch. 13 - Prob. 77RE Ch. 13 - Prob. 78RE Ch. 13 - Prob. 1T Ch. 13 - In Problems 16, determine whether the sequence is...Ch. 13 - Prob. 3T Ch. 13 - Prob. 4T Ch. 13 - Prob. 5T Ch. 13 - Prob. 6T Ch. 13 - Prob. 7T Ch. 13 - Prob. 8T Ch. 13 - Prob. 9T Ch. 13 - In Problems 912, write a formula for the nth term...Ch. 13 - Prob. 11T Ch. 13 - Prob. 12T Ch. 13 - Prob. 13T Ch. 13 - Prob. 14T Ch. 13 - Prob. 15T Ch. 13 - Prob. 16T Ch. 13 - Prob. 17T Ch. 13 - Prob. 18T Ch. 13 - Prob. 19T Ch. 13 - Prob. 20T Ch. 13 - Prob. 1CUR Ch. 13 - Prob. 2CUR Ch. 13 - Prob. 3CUR Ch. 13 - Prob. 4CUR Ch. 13 - Prob. 5CUR Ch. 13 - Prob. 6CUR Ch. 13 - Prob. 7CUR Ch. 13 - Prob. 8CUR Ch. 13 - Prob. 9CUR Ch. 13 - Prob. 10CUR Ch. 13 - Prob. 11CUR Ch. 13 - Prob. 12CUR Ch. 13 - Prob. 13CUR Ch. 13 - Prob. 14CUR Ch. 13 - Prob. 15CUR Ch. 13 - Prob. 16CUR Ch. 13 - Prob. 17CUR Ch. 13 - Prob. 18CUR Ch. 13 - Prob. 19CUR Ch. 13 - Prob. 20CUR Ch. 13 - Prob. 21CUR Ch. 13 - Prob. 22CUR Ch. 13 - Prob. 23CUR Ch. 13 - Prob. 24CUR Ch. 13 - Prob. 25CUR

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The equation x 2 ( 2 x + 1 ) + 40 = ( x 2 − 8 ) ( x − 5 ) .

Solution Summary: The author explains how to solve the equation x2(2x+1)+40 for x as follows.

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To solve: The equation x2(2x+1)+40=(x2−8)(x−5).

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Chapter 13 Solutions