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Simplifying x(x + -4) + -2 = x * x + -4(x + 3) Reorder the terms: x(-4 + x) + -2 = x * x + -4(x + 3) (-4 * x + x * x) + -2 = x * x + -4(x + 3) (-4x + x2) + -2 = x * x + -4(x + 3) Reorder the terms: -2 + -4x + x2 = x * x + -4(x + 3) Multiply x * x -2 + -4x + x2 = x2 + -4(x + 3) Reorder the terms: -2 + -4x + x2 = x2 + -4(3 + x) -2 + -4x + x2 = x2 + (3 * -4 + x * -4) -2 + -4x + x2 = x2 + (-12 + -4x) Reorder the terms: -2 + -4x + x2 = -12 + -4x + x2 Add '4x' to each side of the equation. -2 + -4x + 4x + x2 = -12 + -4x + 4x + x2 Combine like terms: -4x + 4x = 0 -2 + 0 + x2 = -12 + -4x + 4x + x2 -2 + x2 = -12 + -4x + 4x + x2 Combine like terms: -4x + 4x = 0 -2 + x2 = -12 + 0 + x2 -2 + x2 = -12 + x2 Add '-1x2' to each side of the equation. -2 + x2 + -1x2 = -12 + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 + 0 = -12 + x2 + -1x2 -2 = -12 + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -2 = -12 + 0 -2 = -12 Solving -2 = -12 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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