2d^2+14d-240=0

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Solution for 2d^2+14d-240=0 equation:


Simplifying
2d2 + 14d + -240 = 0

Reorder the terms:
-240 + 14d + 2d2 = 0

Solving
-240 + 14d + 2d2 = 0

Solving for variable 'd'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-120 + 7d + d2) = 0

Factor a trinomial.
2((-15 + -1d)(8 + -1d)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-15 + -1d)' equal to zero and attempt to solve: Simplifying -15 + -1d = 0 Solving -15 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -1d = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -1d = 0 + 15 -1d = 0 + 15 Combine like terms: 0 + 15 = 15 -1d = 15 Divide each side by '-1'. d = -15 Simplifying d = -15

Subproblem 2

Set the factor '(8 + -1d)' equal to zero and attempt to solve: Simplifying 8 + -1d = 0 Solving 8 + -1d = 0 Move all terms containing d to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1d = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1d = 0 + -8 -1d = 0 + -8 Combine like terms: 0 + -8 = -8 -1d = -8 Divide each side by '-1'. d = 8 Simplifying d = 8

Solution

d = {-15, 8}

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