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Simplifying (8 + 2x)(22 + 2x) = 480 Multiply (8 + 2x) * (22 + 2x) (8(22 + 2x) + 2x * (22 + 2x)) = 480 ((22 * 8 + 2x * 8) + 2x * (22 + 2x)) = 480 ((176 + 16x) + 2x * (22 + 2x)) = 480 (176 + 16x + (22 * 2x + 2x * 2x)) = 480 (176 + 16x + (44x + 4x2)) = 480 Combine like terms: 16x + 44x = 60x (176 + 60x + 4x2) = 480 Solving 176 + 60x + 4x2 = 480 Solving for variable 'x'. Reorder the terms: 176 + -480 + 60x + 4x2 = 480 + -480 Combine like terms: 176 + -480 = -304 -304 + 60x + 4x2 = 480 + -480 Combine like terms: 480 + -480 = 0 -304 + 60x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-76 + 15x + x2) = 0 Factor a trinomial. 4((-19 + -1x)(4 + -1x)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-19 + -1x)' equal to zero and attempt to solve: Simplifying -19 + -1x = 0 Solving -19 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '19' to each side of the equation. -19 + 19 + -1x = 0 + 19 Combine like terms: -19 + 19 = 0 0 + -1x = 0 + 19 -1x = 0 + 19 Combine like terms: 0 + 19 = 19 -1x = 19 Divide each side by '-1'. x = -19 Simplifying x = -19Subproblem 2
Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Solution
x = {-19, 4}
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