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Simplifying (16 + 2x)(24 + 2x) = 1280 Multiply (16 + 2x) * (24 + 2x) (16(24 + 2x) + 2x * (24 + 2x)) = 1280 ((24 * 16 + 2x * 16) + 2x * (24 + 2x)) = 1280 ((384 + 32x) + 2x * (24 + 2x)) = 1280 (384 + 32x + (24 * 2x + 2x * 2x)) = 1280 (384 + 32x + (48x + 4x2)) = 1280 Combine like terms: 32x + 48x = 80x (384 + 80x + 4x2) = 1280 Solving 384 + 80x + 4x2 = 1280 Solving for variable 'x'. Reorder the terms: 384 + -1280 + 80x + 4x2 = 1280 + -1280 Combine like terms: 384 + -1280 = -896 -896 + 80x + 4x2 = 1280 + -1280 Combine like terms: 1280 + -1280 = 0 -896 + 80x + 4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-224 + 20x + x2) = 0 Factor a trinomial. 4((-28 + -1x)(8 + -1x)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-28 + -1x)' equal to zero and attempt to solve: Simplifying -28 + -1x = 0 Solving -28 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + -1x = 0 + 28 Combine like terms: -28 + 28 = 0 0 + -1x = 0 + 28 -1x = 0 + 28 Combine like terms: 0 + 28 = 28 -1x = 28 Divide each side by '-1'. x = -28 Simplifying x = -28Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8Solution
x = {-28, 8}
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