x^2-40x+850=0

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Solution for x^2-40x+850=0 equation:


Simplifying
x2 + -40x + 850 = 0

Reorder the terms:
850 + -40x + x2 = 0

Solving
850 + -40x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-850' to each side of the equation.
850 + -40x + -850 + x2 = 0 + -850

Reorder the terms:
850 + -850 + -40x + x2 = 0 + -850

Combine like terms: 850 + -850 = 0
0 + -40x + x2 = 0 + -850
-40x + x2 = 0 + -850

Combine like terms: 0 + -850 = -850
-40x + x2 = -850

The x term is -40x.  Take half its coefficient (-20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
-40x + 400 + x2 = -850 + 400

Reorder the terms:
400 + -40x + x2 = -850 + 400

Combine like terms: -850 + 400 = -450
400 + -40x + x2 = -450

Factor a perfect square on the left side:
(x + -20)(x + -20) = -450

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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