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Simplifying 3x3 + 27x = 3x(x2 + 9) Reorder the terms: 27x + 3x3 = 3x(x2 + 9) Reorder the terms: 27x + 3x3 = 3x(9 + x2) 27x + 3x3 = (9 * 3x + x2 * 3x) 27x + 3x3 = (27x + 3x3) Add '-27x' to each side of the equation. 27x + -27x + 3x3 = 27x + -27x + 3x3 Combine like terms: 27x + -27x = 0 0 + 3x3 = 27x + -27x + 3x3 3x3 = 27x + -27x + 3x3 Combine like terms: 27x + -27x = 0 3x3 = 0 + 3x3 3x3 = 3x3 Add '-3x3' to each side of the equation. 3x3 + -3x3 = 3x3 + -3x3 Combine like terms: 3x3 + -3x3 = 0 0 = 3x3 + -3x3 Combine like terms: 3x3 + -3x3 = 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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