x-2x*x=22

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Solution for x-2x*x=22 equation:


Simplifying
x + -2x * x = 22

Multiply x * x
x + -2x2 = 22

Solving
x + -2x2 = 22

Solving for variable 'x'.

Reorder the terms:
-22 + x + -2x2 = 22 + -22

Combine like terms: 22 + -22 = 0
-22 + x + -2x2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
11 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + -0.5x + -11 + x2 = 0 + -11

Reorder the terms:
11 + -11 + -0.5x + x2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -0.5x + x2 = 0 + -11
-0.5x + x2 = 0 + -11

Combine like terms: 0 + -11 = -11
-0.5x + x2 = -11

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.5x + 0.25 + x2 = -11 + 0.25

Reorder the terms:
0.25 + -0.5x + x2 = -11 + 0.25

Combine like terms: -11 + 0.25 = -10.75
0.25 + -0.5x + x2 = -10.75

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -10.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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