-7x^2+6+2x-12-9x^2=

Solution for -7x^2+6+2x-12-9x^2= equation:

Simplifying
-7x2 + 6 + 2x + -12 + -9x2 = 0

Reorder the terms:
6 + -12 + 2x + -7x2 + -9x2 = 0

Combine like terms: 6 + -12 = -6
-6 + 2x + -7x2 + -9x2 = 0

Combine like terms: -7x2 + -9x2 = -16x2
-6 + 2x + -16x2 = 0

Solving
-6 + 2x + -16x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + x + -8x2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-3 + x + -8x2)' equal to zero and attempt to solve:

Simplifying
-3 + x + -8x2 = 0

Solving
-3 + x + -8x2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
0.375 + -0.125x + x2 = 0

Move the constant term to the right:

Add '-0.375' to each side of the equation.
0.375 + -0.125x + -0.375 + x2 = 0 + -0.375

Reorder the terms:
0.375 + -0.375 + -0.125x + x2 = 0 + -0.375

Combine like terms: 0.375 + -0.375 = 0.000
0.000 + -0.125x + x2 = 0 + -0.375
-0.125x + x2 = 0 + -0.375

Combine like terms: 0 + -0.375 = -0.375
-0.125x + x2 = -0.375

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.125x + 0.25 + x2 = -0.375 + 0.25

Reorder the terms:
0.25 + -0.125x + x2 = -0.375 + 0.25

Combine like terms: -0.375 + 0.25 = -0.125
0.25 + -0.125x + x2 = -0.125

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.