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Simplifying (x * x) + 3x = (x * x) + x + 2 Multiply x * x (x2) + 3x = (x * x) + x + 2 x2 + 3x = (x * x) + x + 2 Reorder the terms: 3x + x2 = (x * x) + x + 2 Multiply x * x 3x + x2 = (x2) + x + 2 3x + x2 = x2 + x + 2 Reorder the terms: 3x + x2 = 2 + x + x2 Add '-1x2' to each side of the equation. 3x + x2 + -1x2 = 2 + x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 3x + 0 = 2 + x + x2 + -1x2 3x = 2 + x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 3x = 2 + x + 0 3x = 2 + x Solving 3x = 2 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 3x + -1x = 2 + x + -1x Combine like terms: 3x + -1x = 2x 2x = 2 + x + -1x Combine like terms: x + -1x = 0 2x = 2 + 0 2x = 2 Divide each side by '2'. x = 1 Simplifying x = 1
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