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Simplifying (5x + -2)(5x + -2) = 10x + -4 Reorder the terms: (-2 + 5x)(5x + -2) = 10x + -4 Reorder the terms: (-2 + 5x)(-2 + 5x) = 10x + -4 Multiply (-2 + 5x) * (-2 + 5x) (-2(-2 + 5x) + 5x * (-2 + 5x)) = 10x + -4 ((-2 * -2 + 5x * -2) + 5x * (-2 + 5x)) = 10x + -4 ((4 + -10x) + 5x * (-2 + 5x)) = 10x + -4 (4 + -10x + (-2 * 5x + 5x * 5x)) = 10x + -4 (4 + -10x + (-10x + 25x2)) = 10x + -4 Combine like terms: -10x + -10x = -20x (4 + -20x + 25x2) = 10x + -4 Reorder the terms: 4 + -20x + 25x2 = -4 + 10x Solving 4 + -20x + 25x2 = -4 + 10x Solving for variable 'x'. Reorder the terms: 4 + 4 + -20x + -10x + 25x2 = -4 + 10x + 4 + -10x Combine like terms: 4 + 4 = 8 8 + -20x + -10x + 25x2 = -4 + 10x + 4 + -10x Combine like terms: -20x + -10x = -30x 8 + -30x + 25x2 = -4 + 10x + 4 + -10x Reorder the terms: 8 + -30x + 25x2 = -4 + 4 + 10x + -10x Combine like terms: -4 + 4 = 0 8 + -30x + 25x2 = 0 + 10x + -10x 8 + -30x + 25x2 = 10x + -10x Combine like terms: 10x + -10x = 0 8 + -30x + 25x2 = 0 Factor a trinomial. (2 + -5x)(4 + -5x) = 0Subproblem 1
Set the factor '(2 + -5x)' equal to zero and attempt to solve: Simplifying 2 + -5x = 0 Solving 2 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5x = 0 + -2 -5x = 0 + -2 Combine like terms: 0 + -2 = -2 -5x = -2 Divide each side by '-5'. x = 0.4 Simplifying x = 0.4Subproblem 2
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 = 0.8Solution
x = {0.4, 0.8}
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