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Simplifying (x2 + 8) = (x2 + 2x + -2) Reorder the terms: (8 + x2) = (x2 + 2x + -2) Remove parenthesis around (8 + x2) 8 + x2 = (x2 + 2x + -2) Reorder the terms: 8 + x2 = (-2 + 2x + x2) Remove parenthesis around (-2 + 2x + x2) 8 + x2 = -2 + 2x + x2 Add '-1x2' to each side of the equation. 8 + x2 + -1x2 = -2 + 2x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 8 + 0 = -2 + 2x + x2 + -1x2 8 = -2 + 2x + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 8 = -2 + 2x + 0 8 = -2 + 2x Solving 8 = -2 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 8 + -2x = -2 + 2x + -2x Combine like terms: 2x + -2x = 0 8 + -2x = -2 + 0 8 + -2x = -2 Add '-8' to each side of the equation. 8 + -8 + -2x = -2 + -8 Combine like terms: 8 + -8 = 0 0 + -2x = -2 + -8 -2x = -2 + -8 Combine like terms: -2 + -8 = -10 -2x = -10 Divide each side by '-2'. x = 5 Simplifying x = 5
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