x^2-16x+90=

Solution for x^2-16x+90= equation:

Simplifying
x2 + -16x + 90 = 0

Reorder the terms:
90 + -16x + x2 = 0

Solving
90 + -16x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-90' to each side of the equation.
90 + -16x + -90 + x2 = 0 + -90

Reorder the terms:
90 + -90 + -16x + x2 = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -16x + x2 = 0 + -90
-16x + x2 = 0 + -90

Combine like terms: 0 + -90 = -90
-16x + x2 = -90

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = -90 + 64

Reorder the terms:
64 + -16x + x2 = -90 + 64

Combine like terms: -90 + 64 = -26
64 + -16x + x2 = -26

Factor a perfect square on the left side:
(x + -8)(x + -8) = -26

Can't calculate square root of the right side.

The solution to this equation could not be determined.