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Simplifying 20d2 + 26d + 8 = 0 Reorder the terms: 8 + 26d + 20d2 = 0 Solving 8 + 26d + 20d2 = 0 Solving for variable 'd'. Factor out the Greatest Common Factor (GCF), '2'. 2(4 + 13d + 10d2) = 0 Factor a trinomial. 2((4 + 5d)(1 + 2d)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(4 + 5d)' equal to zero and attempt to solve: Simplifying 4 + 5d = 0 Solving 4 + 5d = 0 Move all terms containing d to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 5d = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 5d = 0 + -4 5d = 0 + -4 Combine like terms: 0 + -4 = -4 5d = -4 Divide each side by '5'. d = -0.8 Simplifying d = -0.8Subproblem 2
Set the factor '(1 + 2d)' equal to zero and attempt to solve: Simplifying 1 + 2d = 0 Solving 1 + 2d = 0 Move all terms containing d to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2d = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2d = 0 + -1 2d = 0 + -1 Combine like terms: 0 + -1 = -1 2d = -1 Divide each side by '2'. d = -0.5 Simplifying d = -0.5Solution
d = {-0.8, -0.5}
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