r^2-125=

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Solution for r^2-125= equation: 


Simplifying
r2 + -125 = 0

Reorder the terms:
-125 + r2 = 0

Solving
-125 + r2 = 0

Solving for variable 'r'.

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

Add '125' to each side of the equation.
-125 + 125 + r2 = 0 + 125

Combine like terms: -125 + 125 = 0
0 + r2 = 0 + 125
r2 = 0 + 125

Combine like terms: 0 + 125 = 125
r2 = 125

Simplifying
r2 = 125

Take the square root of each side:
r = {-11.180339887, 11.180339887}

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