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Simplifying 20d + 3d2 + 25 = 0 Reorder the terms: 25 + 20d + 3d2 = 0 Solving 25 + 20d + 3d2 = 0 Solving for variable 'd'. Factor a trinomial. (5 + d)(5 + 3d) = 0Subproblem 1
Set the factor '(5 + d)' equal to zero and attempt to solve: Simplifying 5 + d = 0 Solving 5 + d = 0 Move all terms containing d to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + d = 0 + -5 Combine like terms: 5 + -5 = 0 0 + d = 0 + -5 d = 0 + -5 Combine like terms: 0 + -5 = -5 d = -5 Simplifying d = -5Subproblem 2
Set the factor '(5 + 3d)' equal to zero and attempt to solve: Simplifying 5 + 3d = 0 Solving 5 + 3d = 0 Move all terms containing d to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 3d = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 3d = 0 + -5 3d = 0 + -5 Combine like terms: 0 + -5 = -5 3d = -5 Divide each side by '3'. d = -1.666666667 Simplifying d = -1.666666667Solution
d = {-5, -1.666666667}
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