k^2+7k+168=0

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Solution for k^2+7k+168=0 equation: 


Simplifying
k2 + 7k + 168 = 0

Reorder the terms:
168 + 7k + k2 = 0

Solving
168 + 7k + k2 = 0

Solving for variable 'k'.

Begin completing the square.

Move the constant term to the right:

Add '-168' to each side of the equation.
168 + 7k + -168 + k2 = 0 + -168

Reorder the terms:
168 + -168 + 7k + k2 = 0 + -168

Combine like terms: 168 + -168 = 0
0 + 7k + k2 = 0 + -168
7k + k2 = 0 + -168

Combine like terms: 0 + -168 = -168
7k + k2 = -168

The k term is 7k.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7k + 12.25 + k2 = -168 + 12.25

Reorder the terms:
12.25 + 7k + k2 = -168 + 12.25

Combine like terms: -168 + 12.25 = -155.75
12.25 + 7k + k2 = -155.75

Factor a perfect square on the left side:
(k + 3.5)(k + 3.5) = -155.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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