2d^2-5d=25

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Solution for 2d^2-5d=25 equation:


Simplifying
2d2 + -5d = 25

Reorder the terms:
-5d + 2d2 = 25

Solving
-5d + 2d2 = 25

Solving for variable 'd'.

Reorder the terms:
-25 + -5d + 2d2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + -5d + 2d2 = 0

Factor a trinomial.
(-5 + -2d)(5 + -1d) = 0

Subproblem 1

Set the factor '(-5 + -2d)' equal to zero and attempt to solve: Simplifying -5 + -2d = 0 Solving -5 + -2d = 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 + -2d = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -2d = 0 + 5 -2d = 0 + 5 Combine like terms: 0 + 5 = 5 -2d = 5 Divide each side by '-2'. d = -2.5 Simplifying d = -2.5

Subproblem 2

Set the factor '(5 + -1d)' equal to zero and attempt to solve: Simplifying 5 + -1d = 0 Solving 5 + -1d = 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 + -1d = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1d = 0 + -5 -1d = 0 + -5 Combine like terms: 0 + -5 = -5 -1d = -5 Divide each side by '-1'. d = 5 Simplifying d = 5

Solution

d = {-2.5, 5}

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