(-8v^2-5v-9)+(6v^2+7v-1)-(9v^2-6v+7)=

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Solution for (-8v^2-5v-9)+(6v^2+7v-1)-(9v^2-6v+7)= equation: 


Simplifying
(-8v2 + -5v + -9) + (6v2 + 7v + -1) + -1(9v2 + -6v + 7) = 0

Reorder the terms:
(-9 + -5v + -8v2) + (6v2 + 7v + -1) + -1(9v2 + -6v + 7) = 0

Remove parenthesis around (-9 + -5v + -8v2)
-9 + -5v + -8v2 + (6v2 + 7v + -1) + -1(9v2 + -6v + 7) = 0

Reorder the terms:
-9 + -5v + -8v2 + (-1 + 7v + 6v2) + -1(9v2 + -6v + 7) = 0

Remove parenthesis around (-1 + 7v + 6v2)
-9 + -5v + -8v2 + -1 + 7v + 6v2 + -1(9v2 + -6v + 7) = 0

Reorder the terms:
-9 + -5v + -8v2 + -1 + 7v + 6v2 + -1(7 + -6v + 9v2) = 0
-9 + -5v + -8v2 + -1 + 7v + 6v2 + (7 * -1 + -6v * -1 + 9v2 * -1) = 0
-9 + -5v + -8v2 + -1 + 7v + 6v2 + (-7 + 6v + -9v2) = 0

Reorder the terms:
-9 + -1 + -7 + -5v + 7v + 6v + -8v2 + 6v2 + -9v2 = 0

Combine like terms: -9 + -1 = -10
-10 + -7 + -5v + 7v + 6v + -8v2 + 6v2 + -9v2 = 0

Combine like terms: -10 + -7 = -17
-17 + -5v + 7v + 6v + -8v2 + 6v2 + -9v2 = 0

Combine like terms: -5v + 7v = 2v
-17 + 2v + 6v + -8v2 + 6v2 + -9v2 = 0

Combine like terms: 2v + 6v = 8v
-17 + 8v + -8v2 + 6v2 + -9v2 = 0

Combine like terms: -8v2 + 6v2 = -2v2
-17 + 8v + -2v2 + -9v2 = 0

Combine like terms: -2v2 + -9v2 = -11v2
-17 + 8v + -11v2 = 0

Solving
-17 + 8v + -11v2 = 0

Solving for variable 'v'.

Begin completing the square.  Divide all terms by
-11 the coefficient of the squared term: 

Divide each side by '-11'.
1.545454545 + -0.7272727273v + v2 = 0

Move the constant term to the right:

Add '-1.545454545' to each side of the equation.
1.545454545 + -0.7272727273v + -1.545454545 + v2 = 0 + -1.545454545

Reorder the terms:
1.545454545 + -1.545454545 + -0.7272727273v + v2 = 0 + -1.545454545

Combine like terms: 1.545454545 + -1.545454545 = 0.000000000
0.000000000 + -0.7272727273v + v2 = 0 + -1.545454545
-0.7272727273v + v2 = 0 + -1.545454545

Combine like terms: 0 + -1.545454545 = -1.545454545
-0.7272727273v + v2 = -1.545454545

The v term is -0.7272727273v.  Take half its coefficient (-0.3636363637).
Square it (0.1322314050) and add it to both sides.

Add '0.1322314050' to each side of the equation.
-0.7272727273v + 0.1322314050 + v2 = -1.545454545 + 0.1322314050

Reorder the terms:
0.1322314050 + -0.7272727273v + v2 = -1.545454545 + 0.1322314050

Combine like terms: -1.545454545 + 0.1322314050 = -1.41322314
0.1322314050 + -0.7272727273v + v2 = -1.41322314

Factor a perfect square on the left side:
(v + -0.3636363637)(v + -0.3636363637) = -1.41322314

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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