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Simplifying -4x2 = 25 + -20x Solving -4x2 = 25 + -20x Solving for variable 'x'. Reorder the terms: -25 + 20x + -4x2 = 25 + -20x + -25 + 20x Reorder the terms: -25 + 20x + -4x2 = 25 + -25 + -20x + 20x Combine like terms: 25 + -25 = 0 -25 + 20x + -4x2 = 0 + -20x + 20x -25 + 20x + -4x2 = -20x + 20x Combine like terms: -20x + 20x = 0 -25 + 20x + -4x2 = 0 Factor a trinomial. (-5 + 2x)(5 + -2x) = 0Subproblem 1
Set the factor '(-5 + 2x)' equal to zero and attempt to solve: Simplifying -5 + 2x = 0 Solving -5 + 2x = 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 + 2x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 2x = 0 + 5 2x = 0 + 5 Combine like terms: 0 + 5 = 5 2x = 5 Divide each side by '2'. x = 2.5 Simplifying x = 2.5Subproblem 2
Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 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 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5Solution
x = {2.5, 2.5}
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