15d^2+16d+4=0

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Solution for 15d^2+16d+4=0 equation:


Simplifying
15d2 + 16d + 4 = 0

Reorder the terms:
4 + 16d + 15d2 = 0

Solving
4 + 16d + 15d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(2 + 3d)(2 + 5d) = 0

Subproblem 1

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 = -0.6666666667

Subproblem 2

Set the factor '(2 + 5d)' equal to zero and attempt to solve: Simplifying 2 + 5d = 0 Solving 2 + 5d = 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 + 5d = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 5d = 0 + -2 5d = 0 + -2 Combine like terms: 0 + -2 = -2 5d = -2 Divide each side by '5'. d = -0.4 Simplifying d = -0.4

Solution

d = {-0.6666666667, -0.4}

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