5r^2=80

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Solution for 5r^2=80 equation: 


Simplifying
5r2 = 80

Solving
5r2 = 80

Solving for variable 'r'.

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

Divide each side by '5'.
r2 = 16

Simplifying
r2 = 16

Take the square root of each side:
r = {-4, 4}

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