9x^2-84+8=0

Solution for 9x^2-84+8=0 equation:

Simplifying
9x2 + -84 + 8 = 0

Reorder the terms:
-84 + 8 + 9x2 = 0

Combine like terms: -84 + 8 = -76
-76 + 9x2 = 0

Solving
-76 + 9x2 = 0

Solving for variable 'x'.

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

Add '76' to each side of the equation.
-76 + 76 + 9x2 = 0 + 76

Combine like terms: -76 + 76 = 0
0 + 9x2 = 0 + 76
9x2 = 0 + 76

Combine like terms: 0 + 76 = 76
9x2 = 76

Divide each side by '9'.
x2 = 8.444444444

Simplifying
x2 = 8.444444444

Take the square root of each side:
x = {-2.905932629, 2.905932629}