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Simplifying
12r2 + -3 = 0
Reorder the terms:
-3 + 12r2 = 0
Solving
-3 + 12r2 = 0
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '3' to each side of the equation.
-3 + 3 + 12r2 = 0 + 3
Combine like terms: -3 + 3 = 0
0 + 12r2 = 0 + 3
12r2 = 0 + 3
Combine like terms: 0 + 3 = 3
12r2 = 3
Divide each side by '12'.
r2 = 0.25
Simplifying
r2 = 0.25
Take the square root of each side:
r = {-0.5, 0.5}
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