25r^2-144=

Solution for 25r^2-144= equation:

Simplifying
25r2 + -144 = 0

Reorder the terms:
-144 + 25r2 = 0

Solving
-144 + 25r2 = 0

Solving for variable 'r'.

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

Add '144' to each side of the equation.
-144 + 144 + 25r2 = 0 + 144

Combine like terms: -144 + 144 = 0
0 + 25r2 = 0 + 144
25r2 = 0 + 144

Combine like terms: 0 + 144 = 144
25r2 = 144

Divide each side by '25'.
r2 = 5.76

Simplifying
r2 = 5.76

Take the square root of each side:
r = {-2.4, 2.4}