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Simplifying (9x + 3)(9x + -3) = 0 Reorder the terms: (3 + 9x)(9x + -3) = 0 Reorder the terms: (3 + 9x)(-3 + 9x) = 0 Multiply (3 + 9x) * (-3 + 9x) (3(-3 + 9x) + 9x * (-3 + 9x)) = 0 ((-3 * 3 + 9x * 3) + 9x * (-3 + 9x)) = 0 ((-9 + 27x) + 9x * (-3 + 9x)) = 0 (-9 + 27x + (-3 * 9x + 9x * 9x)) = 0 (-9 + 27x + (-27x + 81x2)) = 0 Combine like terms: 27x + -27x = 0 (-9 + 0 + 81x2) = 0 (-9 + 81x2) = 0 Solving -9 + 81x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 81x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 81x2 = 0 + 9 81x2 = 0 + 9 Combine like terms: 0 + 9 = 9 81x2 = 9 Divide each side by '81'. x2 = 0.1111111111 Simplifying x2 = 0.1111111111 Take the square root of each side: x = {-0.333333333, 0.333333333}
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