x^2-18x+81=-12

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Solution for x^2-18x+81=-12 equation:


Simplifying
x2 + -18x + 81 = -12

Reorder the terms:
81 + -18x + x2 = -12

Solving
81 + -18x + x2 = -12

Solving for variable 'x'.

Reorder the terms:
81 + 12 + -18x + x2 = -12 + 12

Combine like terms: 81 + 12 = 93
93 + -18x + x2 = -12 + 12

Combine like terms: -12 + 12 = 0
93 + -18x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-93' to each side of the equation.
93 + -18x + -93 + x2 = 0 + -93

Reorder the terms:
93 + -93 + -18x + x2 = 0 + -93

Combine like terms: 93 + -93 = 0
0 + -18x + x2 = 0 + -93
-18x + x2 = 0 + -93

Combine like terms: 0 + -93 = -93
-18x + x2 = -93

The x term is -18x.  Take half its coefficient (-9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
-18x + 81 + x2 = -93 + 81

Reorder the terms:
81 + -18x + x2 = -93 + 81

Combine like terms: -93 + 81 = -12
81 + -18x + x2 = -12

Factor a perfect square on the left side:
(x + -9)(x + -9) = -12

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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