-.5x^2+4x=11

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Solution for -.5x^2+4x=11 equation:


Simplifying
-0.5x2 + 4x = 11

Reorder the terms:
4x + -0.5x2 = 11

Solving
4x + -0.5x2 = 11

Solving for variable 'x'.

Reorder the terms:
-11 + 4x + -0.5x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-11 + 4x + -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'.
22 + -8x + x2 = 0

Move the constant term to the right:

Add '-22' to each side of the equation.
22 + -8x + -22 + x2 = 0 + -22

Reorder the terms:
22 + -22 + -8x + x2 = 0 + -22

Combine like terms: 22 + -22 = 0
0 + -8x + x2 = 0 + -22
-8x + x2 = 0 + -22

Combine like terms: 0 + -22 = -22
-8x + x2 = -22

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = -22 + 16

Reorder the terms:
16 + -8x + x2 = -22 + 16

Combine like terms: -22 + 16 = -6
16 + -8x + x2 = -6

Factor a perfect square on the left side:
(x + -4)(x + -4) = -6

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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