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Simplifying 5 = x(7 + -2x) 5 = (7 * x + -2x * x) 5 = (7x + -2x2) Solving 5 = 7x + -2x2 Solving for variable 'x'. Reorder the terms: 5 + -7x + 2x2 = 7x + -7x + -2x2 + 2x2 Combine like terms: 7x + -7x = 0 5 + -7x + 2x2 = 0 + -2x2 + 2x2 5 + -7x + 2x2 = -2x2 + 2x2 Combine like terms: -2x2 + 2x2 = 0 5 + -7x + 2x2 = 0 Factor a trinomial. (1 + -1x)(5 + -2x) = 0Subproblem 1
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Subproblem 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 = {1, 2.5}
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