n^2-5n=-8

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Solution for n^2-5n=-8 equation:


Simplifying
n2 + -5n = -8

Reorder the terms:
-5n + n2 = -8

Solving
-5n + n2 = -8

Solving for variable 'n'.

Reorder the terms:
8 + -5n + n2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + -5n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + -5n + -8 + n2 = 0 + -8

Reorder the terms:
8 + -8 + -5n + n2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -5n + n2 = 0 + -8
-5n + n2 = 0 + -8

Combine like terms: 0 + -8 = -8
-5n + n2 = -8

The n term is -5n.  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.
-5n + 6.25 + n2 = -8 + 6.25

Reorder the terms:
6.25 + -5n + n2 = -8 + 6.25

Combine like terms: -8 + 6.25 = -1.75
6.25 + -5n + n2 = -1.75

Factor a perfect square on the left side:
(n + -2.5)(n + -2.5) = -1.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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