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Simplifying
18r2 + r2 = 0
Combine like terms: 18r2 + r2 = 19r2
19r2 = 0
Solving
19r2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Divide each side by '19'.
r2 = 0
Simplifying
r2 = 0
Take the square root of each side:
r = {0}
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