8D^2+58D+51=-39

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Solution for 8D^2+58D+51=-39 equation:


Simplifying
8D2 + 58D + 51 = -39

Reorder the terms:
51 + 58D + 8D2 = -39

Solving
51 + 58D + 8D2 = -39

Solving for variable 'D'.

Reorder the terms:
51 + 39 + 58D + 8D2 = -39 + 39

Combine like terms: 51 + 39 = 90
90 + 58D + 8D2 = -39 + 39

Combine like terms: -39 + 39 = 0
90 + 58D + 8D2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(45 + 29D + 4D2) = 0

Factor a trinomial.
2((5 + D)(9 + 4D)) = 0

Ignore the factor 2.

Subproblem 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 = -5

Subproblem 2

Set the factor '(9 + 4D)' equal to zero and attempt to solve: Simplifying 9 + 4D = 0 Solving 9 + 4D = 0 Move all terms containing D to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 4D = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 4D = 0 + -9 4D = 0 + -9 Combine like terms: 0 + -9 = -9 4D = -9 Divide each side by '4'. D = -2.25 Simplifying D = -2.25

Solution

D = {-5, -2.25}

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