k^2+13=-5k

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Solution for k^2+13=-5k equation:


Simplifying
k2 + 13 = -5k

Reorder the terms:
13 + k2 = -5k

Solving
13 + k2 = -5k

Solving for variable 'k'.

Reorder the terms:
13 + 5k + k2 = -5k + 5k

Combine like terms: -5k + 5k = 0
13 + 5k + k2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + 5k + -13 + k2 = 0 + -13

Reorder the terms:
13 + -13 + 5k + k2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 5k + k2 = 0 + -13
5k + k2 = 0 + -13

Combine like terms: 0 + -13 = -13
5k + k2 = -13

The k term is 5k.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5k + 6.25 + k2 = -13 + 6.25

Reorder the terms:
6.25 + 5k + k2 = -13 + 6.25

Combine like terms: -13 + 6.25 = -6.75
6.25 + 5k + k2 = -6.75

Factor a perfect square on the left side:
(k + 2.5)(k + 2.5) = -6.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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