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Simplifying
30.3 = 408.0774r2
Solving
30.3 = 408.0774r2
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-408.0774r2' to each side of the equation.
30.3 + -408.0774r2 = 408.0774r2 + -408.0774r2
Combine like terms: 408.0774r2 + -408.0774r2 = 0.0000
30.3 + -408.0774r2 = 0.0000
Add '-30.3' to each side of the equation.
30.3 + -30.3 + -408.0774r2 = 0.0000 + -30.3
Combine like terms: 30.3 + -30.3 = 0.0
0.0 + -408.0774r2 = 0.0000 + -30.3
-408.0774r2 = 0.0000 + -30.3
Combine like terms: 0.0000 + -30.3 = -30.3
-408.0774r2 = -30.3
Divide each side by '-408.0774'.
r2 = 0.0742506201
Simplifying
r2 = 0.0742506201
Take the square root of each side:
r = {-0.27248967, 0.27248967}
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