0=r^2-98.01

Solution for 0=r^2-98.01 equation:

Simplifying
0 = r2 + -98.01

Reorder the terms:
0 = -98.01 + r2

Solving
0 = -98.01 + r2

Solving for variable 'r'.

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

Add '-1r2' to each side of the equation.
0 + -1r2 = -98.01 + r2 + -1r2
Remove the zero:
-1r2 = -98.01 + r2 + -1r2

Combine like terms: r2 + -1r2 = 0
-1r2 = -98.01 + 0
-1r2 = -98.01

Divide each side by '-1'.
r2 = 98.01

Simplifying
r2 = 98.01

Take the square root of each side:
r = {-9.9, 9.9}