9x^2-8+-1=0

Solution for 9x^2-8+-1=0 equation:

Simplifying
9x2 + -8 + -1 = 0

Reorder the terms:
-8 + -1 + 9x2 = 0

Combine like terms: -8 + -1 = -9
-9 + 9x2 = 0

Solving
-9 + 9x2 = 0

Solving for variable 'x'.

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

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

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

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

Divide each side by '9'.
x2 = 1

Simplifying
x2 = 1

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