-4k^2+8k+147=7

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Solution for -4k^2+8k+147=7 equation:


Simplifying
-4k2 + 8k + 147 = 7

Reorder the terms:
147 + 8k + -4k2 = 7

Solving
147 + 8k + -4k2 = 7

Solving for variable 'k'.

Reorder the terms:
147 + -7 + 8k + -4k2 = 7 + -7

Combine like terms: 147 + -7 = 140
140 + 8k + -4k2 = 7 + -7

Combine like terms: 7 + -7 = 0
140 + 8k + -4k2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(35 + 2k + -1k2) = 0

Factor a trinomial.
4((7 + -1k)(5 + k)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(7 + -1k)' equal to zero and attempt to solve: Simplifying 7 + -1k = 0 Solving 7 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1k = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1k = 0 + -7 -1k = 0 + -7 Combine like terms: 0 + -7 = -7 -1k = -7 Divide each side by '-1'. k = 7 Simplifying k = 7

Subproblem 2

Set the factor '(5 + k)' equal to zero and attempt to solve: Simplifying 5 + k = 0 Solving 5 + k = 0 Move all terms containing k to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + k = 0 + -5 Combine like terms: 5 + -5 = 0 0 + k = 0 + -5 k = 0 + -5 Combine like terms: 0 + -5 = -5 k = -5 Simplifying k = -5

Solution

k = {7, -5}

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