2r^2=40

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Solution for 2r^2=40 equation: 


Simplifying
2r2 = 40

Solving
2r2 = 40

Solving for variable 'r'.

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

Divide each side by '2'.
r2 = 20

Simplifying
r2 = 20

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

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