2d^2+20d=-18

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Solution for 2d^2+20d=-18 equation:


Simplifying
2d2 + 20d = -18

Reorder the terms:
20d + 2d2 = -18

Solving
20d + 2d2 = -18

Solving for variable 'd'.

Reorder the terms:
18 + 20d + 2d2 = -18 + 18

Combine like terms: -18 + 18 = 0
18 + 20d + 2d2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(9 + 10d + d2) = 0

Factor a trinomial.
2((9 + d)(1 + d)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(9 + d)' equal to zero and attempt to solve: Simplifying 9 + d = 0 Solving 9 + d = 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 + d = 0 + -9 Combine like terms: 9 + -9 = 0 0 + d = 0 + -9 d = 0 + -9 Combine like terms: 0 + -9 = -9 d = -9 Simplifying d = -9

Subproblem 2

Set the factor '(1 + d)' equal to zero and attempt to solve: Simplifying 1 + d = 0 Solving 1 + d = 0 Move all terms containing d to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + d = 0 + -1 Combine like terms: 1 + -1 = 0 0 + d = 0 + -1 d = 0 + -1 Combine like terms: 0 + -1 = -1 d = -1 Simplifying d = -1

Solution

d = {-9, -1}

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