x^2-10x+72=11

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Solution for x^2-10x+72=11 equation:


Simplifying
x2 + -10x + 72 = 11

Reorder the terms:
72 + -10x + x2 = 11

Solving
72 + -10x + x2 = 11

Solving for variable 'x'.

Reorder the terms:
72 + -11 + -10x + x2 = 11 + -11

Combine like terms: 72 + -11 = 61
61 + -10x + x2 = 11 + -11

Combine like terms: 11 + -11 = 0
61 + -10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-61' to each side of the equation.
61 + -10x + -61 + x2 = 0 + -61

Reorder the terms:
61 + -61 + -10x + x2 = 0 + -61

Combine like terms: 61 + -61 = 0
0 + -10x + x2 = 0 + -61
-10x + x2 = 0 + -61

Combine like terms: 0 + -61 = -61
-10x + x2 = -61

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 = -61 + 25

Reorder the terms:
25 + -10x + x2 = -61 + 25

Combine like terms: -61 + 25 = -36
25 + -10x + x2 = -36

Factor a perfect square on the left side:
(x + -5)(x + -5) = -36

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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