n^2-2n+72=0

Solution for n^2-2n+72=0 equation:

Simplifying
n2 + -2n + 72 = 0

Reorder the terms:
72 + -2n + n2 = 0

Solving
72 + -2n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-72' to each side of the equation.
72 + -2n + -72 + n2 = 0 + -72

Reorder the terms:
72 + -72 + -2n + n2 = 0 + -72

Combine like terms: 72 + -72 = 0
0 + -2n + n2 = 0 + -72
-2n + n2 = 0 + -72

Combine like terms: 0 + -72 = -72
-2n + n2 = -72

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 = -72 + 1

Reorder the terms:
1 + -2n + n2 = -72 + 1

Combine like terms: -72 + 1 = -71
1 + -2n + n2 = -71

Factor a perfect square on the left side:
(n + -1)(n + -1) = -71

Can't calculate square root of the right side.

The solution to this equation could not be determined.