r^2+2r^2=60

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Solution for r^2+2r^2=60 equation: 


Simplifying
r2 + 2r2 = 60

Combine like terms: r2 + 2r2 = 3r2
3r2 = 60

Solving
3r2 = 60

Solving for variable 'r'.

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

Divide each side by '3'.
r2 = 20

Simplifying
r2 = 20

Take the square root of each side:
r = {-4.472135955, 4.472135955}

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