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Simplifying 2x2 = 9x + -7 Reorder the terms: 2x2 = -7 + 9x Solving 2x2 = -7 + 9x Solving for variable 'x'. Reorder the terms: 7 + -9x + 2x2 = -7 + 9x + 7 + -9x Reorder the terms: 7 + -9x + 2x2 = -7 + 7 + 9x + -9x Combine like terms: -7 + 7 = 0 7 + -9x + 2x2 = 0 + 9x + -9x 7 + -9x + 2x2 = 9x + -9x Combine like terms: 9x + -9x = 0 7 + -9x + 2x2 = 0 Factor a trinomial. (1 + -1x)(7 + -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 '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5Solution
x = {1, 3.5}
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