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Simplifying 3 + -2a(a + -1) = a(3 + -2a) + -1(2a + -3) Reorder the terms: 3 + -2a(-1 + a) = a(3 + -2a) + -1(2a + -3) 3 + (-1 * -2a + a * -2a) = a(3 + -2a) + -1(2a + -3) 3 + (2a + -2a2) = a(3 + -2a) + -1(2a + -3) 3 + 2a + -2a2 = (3 * a + -2a * a) + -1(2a + -3) 3 + 2a + -2a2 = (3a + -2a2) + -1(2a + -3) Reorder the terms: 3 + 2a + -2a2 = 3a + -2a2 + -1(-3 + 2a) 3 + 2a + -2a2 = 3a + -2a2 + (-3 * -1 + 2a * -1) 3 + 2a + -2a2 = 3a + -2a2 + (3 + -2a) Reorder the terms: 3 + 2a + -2a2 = 3 + 3a + -2a + -2a2 Combine like terms: 3a + -2a = 1a 3 + 2a + -2a2 = 3 + 1a + -2a2 Add '-3' to each side of the equation. 3 + 2a + -3 + -2a2 = 3 + 1a + -3 + -2a2 Reorder the terms: 3 + -3 + 2a + -2a2 = 3 + 1a + -3 + -2a2 Combine like terms: 3 + -3 = 0 0 + 2a + -2a2 = 3 + 1a + -3 + -2a2 2a + -2a2 = 3 + 1a + -3 + -2a2 Reorder the terms: 2a + -2a2 = 3 + -3 + 1a + -2a2 Combine like terms: 3 + -3 = 0 2a + -2a2 = 0 + 1a + -2a2 2a + -2a2 = 1a + -2a2 Add '2a2' to each side of the equation. 2a + -2a2 + 2a2 = 1a + -2a2 + 2a2 Combine like terms: -2a2 + 2a2 = 0 2a + 0 = 1a + -2a2 + 2a2 2a = 1a + -2a2 + 2a2 Combine like terms: -2a2 + 2a2 = 0 2a = 1a + 0 2a = 1a Solving 2a = 1a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. 2a + -1a = 1a + -1a Combine like terms: 2a + -1a = 1a 1a = 1a + -1a Combine like terms: 1a + -1a = 0 1a = 0 Divide each side by '1'. a = 0 Simplifying a = 0
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