5x^2+4x-6-13x^2=

Solution for 5x^2+4x-6-13x^2= equation:

Simplifying
5x2 + 4x + -6 + -13x2 = 0

Reorder the terms:
-6 + 4x + 5x2 + -13x2 = 0

Combine like terms: 5x2 + -13x2 = -8x2
-6 + 4x + -8x2 = 0

Solving
-6 + 4x + -8x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-3 + 2x + -4x2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(-3 + 2x + -4x2)' equal to zero and attempt to solve:

Simplifying
-3 + 2x + -4x2 = 0

Solving
-3 + 2x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
0.75 + -0.5x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + -0.5x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + -0.5x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + -0.5x + x2 = 0 + -0.75
-0.5x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
-0.5x + x2 = -0.75

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = -0.75 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = -0.75 + 0.0625

Combine like terms: -0.75 + 0.0625 = -0.6875
0.0625 + -0.5x + x2 = -0.6875

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = -0.6875

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.