k^2+14k=-46

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Solution for k^2+14k=-46 equation:


Simplifying
k2 + 14k = -46

Reorder the terms:
14k + k2 = -46

Solving
14k + k2 = -46

Solving for variable 'k'.

Reorder the terms:
46 + 14k + k2 = -46 + 46

Combine like terms: -46 + 46 = 0
46 + 14k + k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-46' to each side of the equation.
46 + 14k + -46 + k2 = 0 + -46

Reorder the terms:
46 + -46 + 14k + k2 = 0 + -46

Combine like terms: 46 + -46 = 0
0 + 14k + k2 = 0 + -46
14k + k2 = 0 + -46

Combine like terms: 0 + -46 = -46
14k + k2 = -46

The k term is 14k.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14k + 49 + k2 = -46 + 49

Reorder the terms:
49 + 14k + k2 = -46 + 49

Combine like terms: -46 + 49 = 3
49 + 14k + k2 = 3

Factor a perfect square on the left side:
(k + 7)(k + 7) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(k + 7) equal to 1.732050808 and -1.732050808.

Subproblem 1

k + 7 = 1.732050808 Simplifying k + 7 = 1.732050808 Reorder the terms: 7 + k = 1.732050808 Solving 7 + k = 1.732050808 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + k = 1.732050808 + -7 Combine like terms: 7 + -7 = 0 0 + k = 1.732050808 + -7 k = 1.732050808 + -7 Combine like terms: 1.732050808 + -7 = -5.267949192 k = -5.267949192 Simplifying k = -5.267949192

Subproblem 2

k + 7 = -1.732050808 Simplifying k + 7 = -1.732050808 Reorder the terms: 7 + k = -1.732050808 Solving 7 + k = -1.732050808 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + k = -1.732050808 + -7 Combine like terms: 7 + -7 = 0 0 + k = -1.732050808 + -7 k = -1.732050808 + -7 Combine like terms: -1.732050808 + -7 = -8.732050808 k = -8.732050808 Simplifying k = -8.732050808

Solution

The solution to the problem is based on the solutions from the subproblems. k = {-5.267949192, -8.732050808}

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