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Simplifying 2x2 + x + -7 = x2 + 7x + -16 Reorder the terms: -7 + x + 2x2 = x2 + 7x + -16 Reorder the terms: -7 + x + 2x2 = -16 + 7x + x2 Solving -7 + x + 2x2 = -16 + 7x + x2 Solving for variable 'x'. Reorder the terms: -7 + 16 + x + -7x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2 Combine like terms: -7 + 16 = 9 9 + x + -7x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2 Combine like terms: x + -7x = -6x 9 + -6x + 2x2 + -1x2 = -16 + 7x + x2 + 16 + -7x + -1x2 Combine like terms: 2x2 + -1x2 = 1x2 9 + -6x + 1x2 = -16 + 7x + x2 + 16 + -7x + -1x2 Reorder the terms: 9 + -6x + 1x2 = -16 + 16 + 7x + -7x + x2 + -1x2 Combine like terms: -16 + 16 = 0 9 + -6x + 1x2 = 0 + 7x + -7x + x2 + -1x2 9 + -6x + 1x2 = 7x + -7x + x2 + -1x2 Combine like terms: 7x + -7x = 0 9 + -6x + 1x2 = 0 + x2 + -1x2 9 + -6x + 1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 9 + -6x + 1x2 = 0 Factor a trinomial. (3 + -1x)(3 + -1x) = 0Subproblem 1
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 = 3Subproblem 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 = {3, 3}
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