2x^2-5x+x^2+4x+8=

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Solution for 2x^2-5x+x^2+4x+8= equation: 


Simplifying
2x2 + -5x + x2 + 4x + 8 = 0

Reorder the terms:
8 + -5x + 4x + 2x2 + x2 = 0

Combine like terms: -5x + 4x = -1x
8 + -1x + 2x2 + x2 = 0

Combine like terms: 2x2 + x2 = 3x2
8 + -1x + 3x2 = 0

Solving
8 + -1x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
2.666666667 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + -0.3333333333x + -2.666666667 + x2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + -0.3333333333x + x2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + -0.3333333333x + x2 = 0 + -2.666666667
-0.3333333333x + x2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
-0.3333333333x + x2 = -2.666666667

The x term is -0.3333333333x.  Take half its coefficient (-0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
-0.3333333333x + 0.02777777779 + x2 = -2.666666667 + 0.02777777779

Reorder the terms:
0.02777777779 + -0.3333333333x + x2 = -2.666666667 + 0.02777777779

Combine like terms: -2.666666667 + 0.02777777779 = -2.63888888921
0.02777777779 + -0.3333333333x + x2 = -2.63888888921

Factor a perfect square on the left side:
(x + -0.1666666667)(x + -0.1666666667) = -2.63888888921

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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