r^2-11=0

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Solution for r^2-11=0 equation: 


Simplifying
r2 + -11 = 0

Reorder the terms:
-11 + r2 = 0

Solving
-11 + r2 = 0

Solving for variable 'r'.

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

Add '11' to each side of the equation.
-11 + 11 + r2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + r2 = 0 + 11
r2 = 0 + 11

Combine like terms: 0 + 11 = 11
r2 = 11

Simplifying
r2 = 11

Take the square root of each side:
r = {-3.31662479, 3.31662479}

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