18r^2-8=

Solution for 18r^2-8= equation:

Simplifying
18r2 + -8 = 0

Reorder the terms:
-8 + 18r2 = 0

Solving
-8 + 18r2 = 0

Solving for variable 'r'.

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

Add '8' to each side of the equation.
-8 + 8 + 18r2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 18r2 = 0 + 8
18r2 = 0 + 8

Combine like terms: 0 + 8 = 8
18r2 = 8

Divide each side by '18'.
r2 = 0.4444444444

Simplifying
r2 = 0.4444444444

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