128r^2-98=

Solution for 128r^2-98= equation:

Simplifying
128r2 + -98 = 0

Reorder the terms:
-98 + 128r2 = 0

Solving
-98 + 128r2 = 0

Solving for variable 'r'.

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

Add '98' to each side of the equation.
-98 + 98 + 128r2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + 128r2 = 0 + 98
128r2 = 0 + 98

Combine like terms: 0 + 98 = 98
128r2 = 98

Divide each side by '128'.
r2 = 0.765625

Simplifying
r2 = 0.765625

Take the square root of each side:
r = {-0.875, 0.875}