x^2-4x+135=0

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Solution for x^2-4x+135=0 equation:


Simplifying
x2 + -4x + 135 = 0

Reorder the terms:
135 + -4x + x2 = 0

Solving
135 + -4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-135' to each side of the equation.
135 + -4x + -135 + x2 = 0 + -135

Reorder the terms:
135 + -135 + -4x + x2 = 0 + -135

Combine like terms: 135 + -135 = 0
0 + -4x + x2 = 0 + -135
-4x + x2 = 0 + -135

Combine like terms: 0 + -135 = -135
-4x + x2 = -135

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -135 + 4

Reorder the terms:
4 + -4x + x2 = -135 + 4

Combine like terms: -135 + 4 = -131
4 + -4x + x2 = -131

Factor a perfect square on the left side:
(x + -2)(x + -2) = -131

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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