n^2+5=-2n

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Solution for n^2+5=-2n equation:


Simplifying
n2 + 5 = -2n

Reorder the terms:
5 + n2 = -2n

Solving
5 + n2 = -2n

Solving for variable 'n'.

Reorder the terms:
5 + 2n + n2 = -2n + 2n

Combine like terms: -2n + 2n = 0
5 + 2n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + 2n + -5 + n2 = 0 + -5

Reorder the terms:
5 + -5 + 2n + n2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2n + n2 = 0 + -5
2n + n2 = 0 + -5

Combine like terms: 0 + -5 = -5
2n + n2 = -5

The n term is 2n.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2n + 1 + n2 = -5 + 1

Reorder the terms:
1 + 2n + n2 = -5 + 1

Combine like terms: -5 + 1 = -4
1 + 2n + n2 = -4

Factor a perfect square on the left side:
(n + 1)(n + 1) = -4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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