100-r^2=0

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Solution for 100-r^2=0 equation: 


Simplifying
100 + -1r2 = 0

Solving
100 + -1r2 = 0

Solving for variable 'r'.

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

Add '-100' to each side of the equation.
100 + -100 + -1r2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -1r2 = 0 + -100
-1r2 = 0 + -100

Combine like terms: 0 + -100 = -100
-1r2 = -100

Divide each side by '-1'.
r2 = 100

Simplifying
r2 = 100

Take the square root of each side:
r = {-10, 10}

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