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Simplifying 5x2 + 7x + -66 = 0 Reorder the terms: -66 + 7x + 5x2 = 0 Solving -66 + 7x + 5x2 = 0 Solving for variable 'x'. Factor a trinomial. (-22 + -5x)(3 + -1x) = 0Subproblem 1
Set the factor '(-22 + -5x)' equal to zero and attempt to solve: Simplifying -22 + -5x = 0 Solving -22 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '22' to each side of the equation. -22 + 22 + -5x = 0 + 22 Combine like terms: -22 + 22 = 0 0 + -5x = 0 + 22 -5x = 0 + 22 Combine like terms: 0 + 22 = 22 -5x = 22 Divide each side by '-5'. x = -4.4 Simplifying x = -4.4Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3Solution
x = {-4.4, 3}
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