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Simplifying 20x2 = 64 + 64x Solving 20x2 = 64 + 64x Solving for variable 'x'. Reorder the terms: -64 + -64x + 20x2 = 64 + 64x + -64 + -64x Reorder the terms: -64 + -64x + 20x2 = 64 + -64 + 64x + -64x Combine like terms: 64 + -64 = 0 -64 + -64x + 20x2 = 0 + 64x + -64x -64 + -64x + 20x2 = 64x + -64x Combine like terms: 64x + -64x = 0 -64 + -64x + 20x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(-16 + -16x + 5x2) = 0 Factor a trinomial. 4((-4 + -5x)(4 + -1x)) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-4 + -5x)' equal to zero and attempt to solve: Simplifying -4 + -5x = 0 Solving -4 + -5x = 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 + -5x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -5x = 0 + 4 -5x = 0 + 4 Combine like terms: 0 + 4 = 4 -5x = 4 Divide each side by '-5'. x = -0.8 Simplifying x = -0.8Subproblem 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 = {-0.8, 4}
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