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Simplifying x(2x + -1) = 2x2 + -1x Reorder the terms: x(-1 + 2x) = 2x2 + -1x (-1 * x + 2x * x) = 2x2 + -1x (-1x + 2x2) = 2x2 + -1x Reorder the terms: -1x + 2x2 = -1x + 2x2 Add 'x' to each side of the equation. -1x + x + 2x2 = -1x + x + 2x2 Combine like terms: -1x + x = 0 0 + 2x2 = -1x + x + 2x2 2x2 = -1x + x + 2x2 Combine like terms: -1x + x = 0 2x2 = 0 + 2x2 2x2 = 2x2 Add '-2x2' to each side of the equation. 2x2 + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 0 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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