245r^2-180=0

Solution for 245r^2-180=0 equation:

Simplifying
245r2 + -180 = 0

Reorder the terms:
-180 + 245r2 = 0

Solving
-180 + 245r2 = 0

Solving for variable 'r'.

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

Add '180' to each side of the equation.
-180 + 180 + 245r2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 245r2 = 0 + 180
245r2 = 0 + 180

Combine like terms: 0 + 180 = 180
245r2 = 180

Divide each side by '245'.
r2 = 0.7346938776

Simplifying
r2 = 0.7346938776

Take the square root of each side:
r = {-0.857142857, 0.857142857}