9x^2-20=-4

Solution for 9x^2-20=-4 equation:

Simplifying
9x2 + -20 = -4

Reorder the terms:
-20 + 9x2 = -4

Solving
-20 + 9x2 = -4

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 9x2 = -4 + 20

Combine like terms: -20 + 20 = 0
0 + 9x2 = -4 + 20
9x2 = -4 + 20

Combine like terms: -4 + 20 = 16
9x2 = 16

Divide each side by '9'.
x2 = 1.777777778

Simplifying
x2 = 1.777777778

Take the square root of each side:
x = {-1.333333333, 1.333333333}