r^2=-7+18

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Solution for r^2=-7+18 equation: 


Simplifying
r2 = -7 + 18

Combine like terms: -7 + 18 = 11
r2 = 11

Solving
r2 = 11

Solving for variable 'r'.

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

Simplifying
r2 = 11

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

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