-55=x^2-12x

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Solution for -55=x^2-12x equation:


Simplifying
-55 = x2 + -12x

Reorder the terms:
-55 = -12x + x2

Solving
-55 = -12x + x2

Solving for variable 'x'.

Reorder the terms:
-55 + 12x + -1x2 = -12x + 12x + x2 + -1x2

Combine like terms: -12x + 12x = 0
-55 + 12x + -1x2 = 0 + x2 + -1x2
-55 + 12x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-55 + 12x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
55 + -12x + x2 = 0

Move the constant term to the right:

Add '-55' to each side of the equation.
55 + -12x + -55 + x2 = 0 + -55

Reorder the terms:
55 + -55 + -12x + x2 = 0 + -55

Combine like terms: 55 + -55 = 0
0 + -12x + x2 = 0 + -55
-12x + x2 = 0 + -55

Combine like terms: 0 + -55 = -55
-12x + x2 = -55

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = -55 + 36

Reorder the terms:
36 + -12x + x2 = -55 + 36

Combine like terms: -55 + 36 = -19
36 + -12x + x2 = -19

Factor a perfect square on the left side:
(x + -6)(x + -6) = -19

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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