37-11x=x^2-18x+81

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Solution for 37-11x=x^2-18x+81 equation:


Simplifying
37 + -11x = x2 + -18x + 81

Reorder the terms:
37 + -11x = 81 + -18x + x2

Solving
37 + -11x = 81 + -18x + x2

Solving for variable 'x'.

Reorder the terms:
37 + -81 + -11x + 18x + -1x2 = 81 + -18x + x2 + -81 + 18x + -1x2

Combine like terms: 37 + -81 = -44
-44 + -11x + 18x + -1x2 = 81 + -18x + x2 + -81 + 18x + -1x2

Combine like terms: -11x + 18x = 7x
-44 + 7x + -1x2 = 81 + -18x + x2 + -81 + 18x + -1x2

Reorder the terms:
-44 + 7x + -1x2 = 81 + -81 + -18x + 18x + x2 + -1x2

Combine like terms: 81 + -81 = 0
-44 + 7x + -1x2 = 0 + -18x + 18x + x2 + -1x2
-44 + 7x + -1x2 = -18x + 18x + x2 + -1x2

Combine like terms: -18x + 18x = 0
-44 + 7x + -1x2 = 0 + x2 + -1x2
-44 + 7x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-44 + 7x + -1x2 = 0

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

Divide each side by '-1'.
44 + -7x + x2 = 0

Move the constant term to the right:

Add '-44' to each side of the equation.
44 + -7x + -44 + x2 = 0 + -44

Reorder the terms:
44 + -44 + -7x + x2 = 0 + -44

Combine like terms: 44 + -44 = 0
0 + -7x + x2 = 0 + -44
-7x + x2 = 0 + -44

Combine like terms: 0 + -44 = -44
-7x + x2 = -44

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -44 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -44 + 12.25

Combine like terms: -44 + 12.25 = -31.75
12.25 + -7x + x2 = -31.75

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = -31.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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