X^2-10X+800=0

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Solution for X^2-10X+800=0 equation:


Simplifying
X2 + -10X + 800 = 0

Reorder the terms:
800 + -10X + X2 = 0

Solving
800 + -10X + X2 = 0

Solving for variable 'X'.

Begin completing the square.

Move the constant term to the right:

Add '-800' to each side of the equation.
800 + -10X + -800 + X2 = 0 + -800

Reorder the terms:
800 + -800 + -10X + X2 = 0 + -800

Combine like terms: 800 + -800 = 0
0 + -10X + X2 = 0 + -800
-10X + X2 = 0 + -800

Combine like terms: 0 + -800 = -800
-10X + X2 = -800

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 = -800 + 25

Reorder the terms:
25 + -10X + X2 = -800 + 25

Combine like terms: -800 + 25 = -775
25 + -10X + X2 = -775

Factor a perfect square on the left side:
(X + -5)(X + -5) = -775

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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