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Simplifying 2x(x + -4x) + 3 = 81 Combine like terms: x + -4x = -3x 2x(-3x) + 3 = 81 Remove parenthesis around (-3x) 2x * -3x + 3 = 81 Reorder the terms for easier multiplication: 2 * -3x * x + 3 = 81 Multiply 2 * -3 -6x * x + 3 = 81 Multiply x * x -6x2 + 3 = 81 Reorder the terms: 3 + -6x2 = 81 Solving 3 + -6x2 = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -6x2 = 81 + -3 Combine like terms: 3 + -3 = 0 0 + -6x2 = 81 + -3 -6x2 = 81 + -3 Combine like terms: 81 + -3 = 78 -6x2 = 78 Divide each side by '-6'. x2 = -13 Simplifying x2 = -13 Reorder the terms: 13 + x2 = -13 + 13 Combine like terms: -13 + 13 = 0 13 + x2 = 0 The solution to this equation could not be determined.
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