x^2-10x+90=-10

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Solution for x^2-10x+90=-10 equation:


Simplifying
x2 + -10x + 90 = -10

Reorder the terms:
90 + -10x + x2 = -10

Solving
90 + -10x + x2 = -10

Solving for variable 'x'.

Reorder the terms:
90 + 10 + -10x + x2 = -10 + 10

Combine like terms: 90 + 10 = 100
100 + -10x + x2 = -10 + 10

Combine like terms: -10 + 10 = 0
100 + -10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + -10x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + -10x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -10x + x2 = 0 + -100
-10x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
-10x + x2 = -100

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -100 + 25

Reorder the terms:
25 + -10x + x2 = -100 + 25

Combine like terms: -100 + 25 = -75
25 + -10x + x2 = -75

Factor a perfect square on the left side:
(x + -5)(x + -5) = -75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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