-6x^2-9x^2+15=0

Solution for -6x^2-9x^2+15=0 equation:

Simplifying
-6x2 + -9x2 + 15 = 0

Reorder the terms:
15 + -6x2 + -9x2 = 0

Combine like terms: -6x2 + -9x2 = -15x2
15 + -15x2 = 0

Solving
15 + -15x2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15' to each side of the equation.
15 + -15 + -15x2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -15x2 = 0 + -15
-15x2 = 0 + -15

Combine like terms: 0 + -15 = -15
-15x2 = -15

Divide each side by '-15'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}