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Simplifying (2 + -4d)(2 + 4d) = 9 Multiply (2 + -4d) * (2 + 4d) (2(2 + 4d) + -4d * (2 + 4d)) = 9 ((2 * 2 + 4d * 2) + -4d * (2 + 4d)) = 9 ((4 + 8d) + -4d * (2 + 4d)) = 9 (4 + 8d + (2 * -4d + 4d * -4d)) = 9 (4 + 8d + (-8d + -16d2)) = 9 Combine like terms: 8d + -8d = 0 (4 + 0 + -16d2) = 9 (4 + -16d2) = 9 Solving 4 + -16d2 = 9 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -16d2 = 9 + -4 Combine like terms: 4 + -4 = 0 0 + -16d2 = 9 + -4 -16d2 = 9 + -4 Combine like terms: 9 + -4 = 5 -16d2 = 5 Divide each side by '-16'. d2 = -0.3125 Simplifying d2 = -0.3125 Reorder the terms: 0.3125 + d2 = -0.3125 + 0.3125 Combine like terms: -0.3125 + 0.3125 = 0.0000 0.3125 + d2 = 0.0000 The solution to this equation could not be determined.
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