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Simplifying 2x(x + 1) = -1x(x + 2) + 7 Reorder the terms: 2x(1 + x) = -1x(x + 2) + 7 (1 * 2x + x * 2x) = -1x(x + 2) + 7 (2x + 2x2) = -1x(x + 2) + 7 Reorder the terms: 2x + 2x2 = -1x(2 + x) + 7 2x + 2x2 = (2 * -1x + x * -1x) + 7 2x + 2x2 = (-2x + -1x2) + 7 Reorder the terms: 2x + 2x2 = 7 + -2x + -1x2 Solving 2x + 2x2 = 7 + -2x + -1x2 Solving for variable 'x'. Reorder the terms: -7 + 2x + 2x + 2x2 + x2 = 7 + -2x + -1x2 + -7 + 2x + x2 Combine like terms: 2x + 2x = 4x -7 + 4x + 2x2 + x2 = 7 + -2x + -1x2 + -7 + 2x + x2 Combine like terms: 2x2 + x2 = 3x2 -7 + 4x + 3x2 = 7 + -2x + -1x2 + -7 + 2x + x2 Reorder the terms: -7 + 4x + 3x2 = 7 + -7 + -2x + 2x + -1x2 + x2 Combine like terms: 7 + -7 = 0 -7 + 4x + 3x2 = 0 + -2x + 2x + -1x2 + x2 -7 + 4x + 3x2 = -2x + 2x + -1x2 + x2 Combine like terms: -2x + 2x = 0 -7 + 4x + 3x2 = 0 + -1x2 + x2 -7 + 4x + 3x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 -7 + 4x + 3x2 = 0 Factor a trinomial. (-7 + -3x)(1 + -1x) = 0Subproblem 1
Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 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 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333Subproblem 2
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 = 1Solution
x = {-2.333333333, 1}
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