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Simplifying 5x2 + 8x + -8 = -4 Reorder the terms: -8 + 8x + 5x2 = -4 Solving -8 + 8x + 5x2 = -4 Solving for variable 'x'. Reorder the terms: -8 + 4 + 8x + 5x2 = -4 + 4 Combine like terms: -8 + 4 = -4 -4 + 8x + 5x2 = -4 + 4 Combine like terms: -4 + 4 = 0 -4 + 8x + 5x2 = 0 Factor a trinomial. (-2 + -1x)(2 + -5x) = 0Subproblem 1
Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 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 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2Subproblem 2
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 = 0.4Solution
x = {-2, 0.4}
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