5x-0.5x^2-5.5=11

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Solution for 5x-0.5x^2-5.5=11 equation:


Simplifying
5x + -0.5x2 + -5.5 = 11

Reorder the terms:
-5.5 + 5x + -0.5x2 = 11

Solving
-5.5 + 5x + -0.5x2 = 11

Solving for variable 'x'.

Reorder the terms:
-5.5 + -11 + 5x + -0.5x2 = 11 + -11

Combine like terms: -5.5 + -11 = -16.5
-16.5 + 5x + -0.5x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-16.5 + 5x + -0.5x2 = 0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
33 + -10x + x2 = 0

Move the constant term to the right:

Add '-33' to each side of the equation.
33 + -10x + -33 + x2 = 0 + -33

Reorder the terms:
33 + -33 + -10x + x2 = 0 + -33

Combine like terms: 33 + -33 = 0
0 + -10x + x2 = 0 + -33
-10x + x2 = 0 + -33

Combine like terms: 0 + -33 = -33
-10x + x2 = -33

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 = -33 + 25

Reorder the terms:
25 + -10x + x2 = -33 + 25

Combine like terms: -33 + 25 = -8
25 + -10x + x2 = -8

Factor a perfect square on the left side:
(x + -5)(x + -5) = -8

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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