7x^2-3x+4+(-8x^2+9x-13)+(-5x^2+6x+2)=

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Solution for 7x^2-3x+4+(-8x^2+9x-13)+(-5x^2+6x+2)= equation:


Simplifying
7x2 + -3x + 4 + (-8x2 + 9x + -13) + (-5x2 + 6x + 2) = 0

Reorder the terms:
7x2 + -3x + 4 + (-13 + 9x + -8x2) + (-5x2 + 6x + 2) = 0

Remove parenthesis around (-13 + 9x + -8x2)
7x2 + -3x + 4 + -13 + 9x + -8x2 + (-5x2 + 6x + 2) = 0

Reorder the terms:
7x2 + -3x + 4 + -13 + 9x + -8x2 + (2 + 6x + -5x2) = 0

Remove parenthesis around (2 + 6x + -5x2)
7x2 + -3x + 4 + -13 + 9x + -8x2 + 2 + 6x + -5x2 = 0

Reorder the terms:
4 + -13 + 2 + -3x + 9x + 6x + 7x2 + -8x2 + -5x2 = 0

Combine like terms: 4 + -13 = -9
-9 + 2 + -3x + 9x + 6x + 7x2 + -8x2 + -5x2 = 0

Combine like terms: -9 + 2 = -7
-7 + -3x + 9x + 6x + 7x2 + -8x2 + -5x2 = 0

Combine like terms: -3x + 9x = 6x
-7 + 6x + 6x + 7x2 + -8x2 + -5x2 = 0

Combine like terms: 6x + 6x = 12x
-7 + 12x + 7x2 + -8x2 + -5x2 = 0

Combine like terms: 7x2 + -8x2 = -1x2
-7 + 12x + -1x2 + -5x2 = 0

Combine like terms: -1x2 + -5x2 = -6x2
-7 + 12x + -6x2 = 0

Solving
-7 + 12x + -6x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
1.166666667 + -2x + x2 = 0

Move the constant term to the right:

Add '-1.166666667' to each side of the equation.
1.166666667 + -2x + -1.166666667 + x2 = 0 + -1.166666667

Reorder the terms:
1.166666667 + -1.166666667 + -2x + x2 = 0 + -1.166666667

Combine like terms: 1.166666667 + -1.166666667 = 0.000000000
0.000000000 + -2x + x2 = 0 + -1.166666667
-2x + x2 = 0 + -1.166666667

Combine like terms: 0 + -1.166666667 = -1.166666667
-2x + x2 = -1.166666667

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -1.166666667 + 1

Reorder the terms:
1 + -2x + x2 = -1.166666667 + 1

Combine like terms: -1.166666667 + 1 = -0.166666667
1 + -2x + x2 = -0.166666667

Factor a perfect square on the left side:
(x + -1)(x + -1) = -0.166666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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