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Simplifying 15d2 + 2d + -8 = 0 Reorder the terms: -8 + 2d + 15d2 = 0 Solving -8 + 2d + 15d2 = 0 Solving for variable 'd'. Factor a trinomial. (-4 + -5d)(2 + -3d) = 0Subproblem 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 '(2 + -3d)' equal to zero and attempt to solve: Simplifying 2 + -3d = 0 Solving 2 + -3d = 0 Move all terms containing d to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -3d = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -3d = 0 + -2 -3d = 0 + -2 Combine like terms: 0 + -2 = -2 -3d = -2 Divide each side by '-3'. d = 0.6666666667 Simplifying d = 0.6666666667Solution
d = {-0.8, 0.6666666667}
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