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Simplifying 2x(x + -3) = x2 + -7x Reorder the terms: 2x(-3 + x) = x2 + -7x (-3 * 2x + x * 2x) = x2 + -7x (-6x + 2x2) = x2 + -7x Reorder the terms: -6x + 2x2 = -7x + x2 Solving -6x + 2x2 = -7x + x2 Solving for variable 'x'. Reorder the terms: -6x + 7x + 2x2 + -1x2 = -7x + x2 + 7x + -1x2 Combine like terms: -6x + 7x = 1x 1x + 2x2 + -1x2 = -7x + x2 + 7x + -1x2 Combine like terms: 2x2 + -1x2 = 1x2 1x + 1x2 = -7x + x2 + 7x + -1x2 Reorder the terms: 1x + 1x2 = -7x + 7x + x2 + -1x2 Combine like terms: -7x + 7x = 0 1x + 1x2 = 0 + x2 + -1x2 1x + 1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 1x + 1x2 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(1 + x) = 0Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {0, -1}
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