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Simplifying a = (9(2x + 1))(9(2x + 1)) Reorder the terms: a = (9(1 + 2x))(9(2x + 1)) a = ((1 * 9 + 2x * 9))(9(2x + 1)) a = ((9 + 18x))(9(2x + 1)) Reorder the terms: a = (9 + 18x)(9(1 + 2x)) a = (9 + 18x)((1 * 9 + 2x * 9)) a = (9 + 18x)((9 + 18x)) Multiply (9 + 18x) * (9 + 18x) a = (9(9 + 18x) + 18x * (9 + 18x)) a = ((9 * 9 + 18x * 9) + 18x * (9 + 18x)) a = ((81 + 162x) + 18x * (9 + 18x)) a = (81 + 162x + (9 * 18x + 18x * 18x)) a = (81 + 162x + (162x + 324x2)) Combine like terms: 162x + 162x = 324x a = (81 + 324x + 324x2) Solving a = 81 + 324x + 324x2 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Simplifying a = 81 + 324x + 324x2
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