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Simplifying 5x2 + 40x + 80 = 2x2 + 4x + 2 + -27 Reorder the terms: 80 + 40x + 5x2 = 2x2 + 4x + 2 + -27 Reorder the terms: 80 + 40x + 5x2 = 2 + -27 + 4x + 2x2 Combine like terms: 2 + -27 = -25 80 + 40x + 5x2 = -25 + 4x + 2x2 Solving 80 + 40x + 5x2 = -25 + 4x + 2x2 Solving for variable 'x'. Reorder the terms: 80 + 25 + 40x + -4x + 5x2 + -2x2 = -25 + 4x + 2x2 + 25 + -4x + -2x2 Combine like terms: 80 + 25 = 105 105 + 40x + -4x + 5x2 + -2x2 = -25 + 4x + 2x2 + 25 + -4x + -2x2 Combine like terms: 40x + -4x = 36x 105 + 36x + 5x2 + -2x2 = -25 + 4x + 2x2 + 25 + -4x + -2x2 Combine like terms: 5x2 + -2x2 = 3x2 105 + 36x + 3x2 = -25 + 4x + 2x2 + 25 + -4x + -2x2 Reorder the terms: 105 + 36x + 3x2 = -25 + 25 + 4x + -4x + 2x2 + -2x2 Combine like terms: -25 + 25 = 0 105 + 36x + 3x2 = 0 + 4x + -4x + 2x2 + -2x2 105 + 36x + 3x2 = 4x + -4x + 2x2 + -2x2 Combine like terms: 4x + -4x = 0 105 + 36x + 3x2 = 0 + 2x2 + -2x2 105 + 36x + 3x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 105 + 36x + 3x2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(35 + 12x + x2) = 0 Factor a trinomial. 3((7 + x)(5 + x)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7Subproblem 2
Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5Solution
x = {-7, -5}
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