(2x^2-2x+2)+(-9x^2+7x-7)=

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Solution for (2x^2-2x+2)+(-9x^2+7x-7)= equation:


Simplifying
(2x2 + -2x + 2) + (-9x2 + 7x + -7) = 0

Reorder the terms:
(2 + -2x + 2x2) + (-9x2 + 7x + -7) = 0

Remove parenthesis around (2 + -2x + 2x2)
2 + -2x + 2x2 + (-9x2 + 7x + -7) = 0

Reorder the terms:
2 + -2x + 2x2 + (-7 + 7x + -9x2) = 0

Remove parenthesis around (-7 + 7x + -9x2)
2 + -2x + 2x2 + -7 + 7x + -9x2 = 0

Reorder the terms:
2 + -7 + -2x + 7x + 2x2 + -9x2 = 0

Combine like terms: 2 + -7 = -5
-5 + -2x + 7x + 2x2 + -9x2 = 0

Combine like terms: -2x + 7x = 5x
-5 + 5x + 2x2 + -9x2 = 0

Combine like terms: 2x2 + -9x2 = -7x2
-5 + 5x + -7x2 = 0

Solving
-5 + 5x + -7x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
0.7142857143 + -0.7142857143x + x2 = 0

Move the constant term to the right:

Add '-0.7142857143' to each side of the equation.
0.7142857143 + -0.7142857143x + -0.7142857143 + x2 = 0 + -0.7142857143

Reorder the terms:
0.7142857143 + -0.7142857143 + -0.7142857143x + x2 = 0 + -0.7142857143

Combine like terms: 0.7142857143 + -0.7142857143 = 0.0000000000
0.0000000000 + -0.7142857143x + x2 = 0 + -0.7142857143
-0.7142857143x + x2 = 0 + -0.7142857143

Combine like terms: 0 + -0.7142857143 = -0.7142857143
-0.7142857143x + x2 = -0.7142857143

The x term is -0.7142857143x.  Take half its coefficient (-0.3571428572).
Square it (0.1275510204) and add it to both sides.

Add '0.1275510204' to each side of the equation.
-0.7142857143x + 0.1275510204 + x2 = -0.7142857143 + 0.1275510204

Reorder the terms:
0.1275510204 + -0.7142857143x + x2 = -0.7142857143 + 0.1275510204

Combine like terms: -0.7142857143 + 0.1275510204 = -0.5867346939
0.1275510204 + -0.7142857143x + x2 = -0.5867346939

Factor a perfect square on the left side:
(x + -0.3571428572)(x + -0.3571428572) = -0.5867346939

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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