r^2-6=91

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Solution for r^2-6=91 equation: 


Simplifying
r2 + -6 = 91

Reorder the terms:
-6 + r2 = 91

Solving
-6 + r2 = 91

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + r2 = 91 + 6

Combine like terms: -6 + 6 = 0
0 + r2 = 91 + 6
r2 = 91 + 6

Combine like terms: 91 + 6 = 97
r2 = 97

Simplifying
r2 = 97

Take the square root of each side:
r = {-9.848857802, 9.848857802}

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