(-4x^2+3)+(-5x^2+1)=

Solution for (-4x^2+3)+(-5x^2+1)= equation:

Simplifying
(-4x2 + 3) + (-5x2 + 1) = 0

Reorder the terms:
(3 + -4x2) + (-5x2 + 1) = 0

Remove parenthesis around (3 + -4x2)
3 + -4x2 + (-5x2 + 1) = 0

Reorder the terms:
3 + -4x2 + (1 + -5x2) = 0

Remove parenthesis around (1 + -5x2)
3 + -4x2 + 1 + -5x2 = 0

Reorder the terms:
3 + 1 + -4x2 + -5x2 = 0

Combine like terms: 3 + 1 = 4
4 + -4x2 + -5x2 = 0

Combine like terms: -4x2 + -5x2 = -9x2
4 + -9x2 = 0

Solving
4 + -9x2 = 0

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + -9x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -9x2 = 0 + -4
-9x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-9x2 = -4

Divide each side by '-9'.
x2 = 0.4444444444

Simplifying
x2 = 0.4444444444

Take the square root of each side:
x = {-0.666666667, 0.666666667}