5d^2+39d+28=0

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Solution for 5d^2+39d+28=0 equation:


Simplifying
5d2 + 39d + 28 = 0

Reorder the terms:
28 + 39d + 5d2 = 0

Solving
28 + 39d + 5d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(7 + d)(4 + 5d) = 0

Subproblem 1

Set the factor '(7 + d)' equal to zero and attempt to solve: Simplifying 7 + d = 0 Solving 7 + d = 0 Move all terms containing d to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + d = 0 + -7 Combine like terms: 7 + -7 = 0 0 + d = 0 + -7 d = 0 + -7 Combine like terms: 0 + -7 = -7 d = -7 Simplifying d = -7

Subproblem 2

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 = -0.8

Solution

d = {-7, -0.8}

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