3d^2-2d-5=0

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Solution for 3d^2-2d-5=0 equation:


Simplifying
3d2 + -2d + -5 = 0

Reorder the terms:
-5 + -2d + 3d2 = 0

Solving
-5 + -2d + 3d2 = 0

Solving for variable 'd'.

Factor a trinomial.
(-1 + -1d)(5 + -3d) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(5 + -3d)' equal to zero and attempt to solve: Simplifying 5 + -3d = 0 Solving 5 + -3d = 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 + -3d = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -3d = 0 + -5 -3d = 0 + -5 Combine like terms: 0 + -5 = -5 -3d = -5 Divide each side by '-3'. d = 1.666666667 Simplifying d = 1.666666667

Solution

d = {-1, 1.666666667}

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