(5x^2+6x-2)+(-7x^2+2x-9)=

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Solution for (5x^2+6x-2)+(-7x^2+2x-9)= equation:


Simplifying
(5x2 + 6x + -2) + (-7x2 + 2x + -9) = 0

Reorder the terms:
(-2 + 6x + 5x2) + (-7x2 + 2x + -9) = 0

Remove parenthesis around (-2 + 6x + 5x2)
-2 + 6x + 5x2 + (-7x2 + 2x + -9) = 0

Reorder the terms:
-2 + 6x + 5x2 + (-9 + 2x + -7x2) = 0

Remove parenthesis around (-9 + 2x + -7x2)
-2 + 6x + 5x2 + -9 + 2x + -7x2 = 0

Reorder the terms:
-2 + -9 + 6x + 2x + 5x2 + -7x2 = 0

Combine like terms: -2 + -9 = -11
-11 + 6x + 2x + 5x2 + -7x2 = 0

Combine like terms: 6x + 2x = 8x
-11 + 8x + 5x2 + -7x2 = 0

Combine like terms: 5x2 + -7x2 = -2x2
-11 + 8x + -2x2 = 0

Solving
-11 + 8x + -2x2 = 0

Solving for variable 'x'.

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

Divide each side by '-2'.
5.5 + -4x + x2 = 0

Move the constant term to the right:

Add '-5.5' to each side of the equation.
5.5 + -4x + -5.5 + x2 = 0 + -5.5

Reorder the terms:
5.5 + -5.5 + -4x + x2 = 0 + -5.5

Combine like terms: 5.5 + -5.5 = 0.0
0.0 + -4x + x2 = 0 + -5.5
-4x + x2 = 0 + -5.5

Combine like terms: 0 + -5.5 = -5.5
-4x + x2 = -5.5

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -5.5 + 4

Reorder the terms:
4 + -4x + x2 = -5.5 + 4

Combine like terms: -5.5 + 4 = -1.5
4 + -4x + x2 = -1.5

Factor a perfect square on the left side:
(x + -2)(x + -2) = -1.5

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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