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Simplifying y = -8 + (3x2 + -1)(1 + x) Reorder the terms: y = -8 + (-1 + 3x2)(1 + x) Multiply (-1 + 3x2) * (1 + x) y = -8 + (-1(1 + x) + 3x2 * (1 + x)) y = -8 + ((1 * -1 + x * -1) + 3x2 * (1 + x)) y = -8 + ((-1 + -1x) + 3x2 * (1 + x)) y = -8 + (-1 + -1x + (1 * 3x2 + x * 3x2)) y = -8 + (-1 + -1x + (3x2 + 3x3)) y = -8 + (-1 + -1x + 3x2 + 3x3) Combine like terms: -8 + -1 = -9 y = -9 + -1x + 3x2 + 3x3 Solving y = -9 + -1x + 3x2 + 3x3 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Simplifying y = -9 + -1x + 3x2 + 3x3
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