4k^2-135=-12k

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Solution for 4k^2-135=-12k equation:


Simplifying
4k2 + -135 = -12k

Reorder the terms:
-135 + 4k2 = -12k

Solving
-135 + 4k2 = -12k

Solving for variable 'k'.

Reorder the terms:
-135 + 12k + 4k2 = -12k + 12k

Combine like terms: -12k + 12k = 0
-135 + 12k + 4k2 = 0

Factor a trinomial.
(-15 + -2k)(9 + -2k) = 0

Subproblem 1

Set the factor '(-15 + -2k)' equal to zero and attempt to solve: Simplifying -15 + -2k = 0 Solving -15 + -2k = 0 Move all terms containing k to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -2k = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -2k = 0 + 15 -2k = 0 + 15 Combine like terms: 0 + 15 = 15 -2k = 15 Divide each side by '-2'. k = -7.5 Simplifying k = -7.5

Subproblem 2

Set the factor '(9 + -2k)' equal to zero and attempt to solve: Simplifying 9 + -2k = 0 Solving 9 + -2k = 0 Move all terms containing k to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2k = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -2k = 0 + -9 -2k = 0 + -9 Combine like terms: 0 + -9 = -9 -2k = -9 Divide each side by '-2'. k = 4.5 Simplifying k = 4.5

Solution

k = {-7.5, 4.5}

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