2k^2+16k=12

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Solution for 2k^2+16k=12 equation:


Simplifying
2k2 + 16k = 12

Reorder the terms:
16k + 2k2 = 12

Solving
16k + 2k2 = 12

Solving for variable 'k'.

Reorder the terms:
-12 + 16k + 2k2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 16k + 2k2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-6 + 8k + k2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-6 + 8k + k2)' equal to zero and attempt to solve: Simplifying -6 + 8k + k2 = 0 Solving -6 + 8k + k2 = 0 Begin completing the square. Move the constant term to the right: Add '6' to each side of the equation. -6 + 8k + 6 + k2 = 0 + 6 Reorder the terms: -6 + 6 + 8k + k2 = 0 + 6 Combine like terms: -6 + 6 = 0 0 + 8k + k2 = 0 + 6 8k + k2 = 0 + 6 Combine like terms: 0 + 6 = 6 8k + k2 = 6 The k term is 8k. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8k + 16 + k2 = 6 + 16 Reorder the terms: 16 + 8k + k2 = 6 + 16 Combine like terms: 6 + 16 = 22 16 + 8k + k2 = 22 Factor a perfect square on the left side: (k + 4)(k + 4) = 22 Calculate the square root of the right side: 4.69041576 Break this problem into two subproblems by setting (k + 4) equal to 4.69041576 and -4.69041576.

Subproblem 1

k + 4 = 4.69041576 Simplifying k + 4 = 4.69041576 Reorder the terms: 4 + k = 4.69041576 Solving 4 + k = 4.69041576 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + k = 4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + k = 4.69041576 + -4 k = 4.69041576 + -4 Combine like terms: 4.69041576 + -4 = 0.69041576 k = 0.69041576 Simplifying k = 0.69041576

Subproblem 2

k + 4 = -4.69041576 Simplifying k + 4 = -4.69041576 Reorder the terms: 4 + k = -4.69041576 Solving 4 + k = -4.69041576 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + k = -4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + k = -4.69041576 + -4 k = -4.69041576 + -4 Combine like terms: -4.69041576 + -4 = -8.69041576 k = -8.69041576 Simplifying k = -8.69041576

Solution

The solution to the problem is based on the solutions from the subproblems. k = {0.69041576, -8.69041576}

Solution

k = {0.69041576, -8.69041576}

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