2x^2+3=2x-8

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Solution for 2x^2+3=2x-8 equation:


Simplifying
2x2 + 3 = 2x + -8

Reorder the terms:
3 + 2x2 = 2x + -8

Reorder the terms:
3 + 2x2 = -8 + 2x

Solving
3 + 2x2 = -8 + 2x

Solving for variable 'x'.

Reorder the terms:
3 + 8 + -2x + 2x2 = -8 + 2x + 8 + -2x

Combine like terms: 3 + 8 = 11
11 + -2x + 2x2 = -8 + 2x + 8 + -2x

Reorder the terms:
11 + -2x + 2x2 = -8 + 8 + 2x + -2x

Combine like terms: -8 + 8 = 0
11 + -2x + 2x2 = 0 + 2x + -2x
11 + -2x + 2x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
11 + -2x + 2x2 = 0

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

Divide each side by '2'.
5.5 + -1x + x2 = 0

Move the constant term to the right:

Add '-5.5' to each side of the equation.
5.5 + -1x + -5.5 + x2 = 0 + -5.5

Reorder the terms:
5.5 + -5.5 + -1x + x2 = 0 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
0.0 + -1x + x2 = 0 + -5.5
-1x + x2 = 0 + -5.5

Combine like terms: 0 + -5.5 = -5.5
-1x + x2 = -5.5

The x term is -1x.  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.
-1x + 0.25 + x2 = -5.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -5.5 + 0.25

Combine like terms: -5.5 + 0.25 = -5.25
0.25 + -1x + x2 = -5.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = -5.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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