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Simplifying
6r2 + 4 = 16
Reorder the terms:
4 + 6r2 = 16
Solving
4 + 6r2 = 16
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + 6r2 = 16 + -4
Combine like terms: 4 + -4 = 0
0 + 6r2 = 16 + -4
6r2 = 16 + -4
Combine like terms: 16 + -4 = 12
6r2 = 12
Divide each side by '6'.
r2 = 2
Simplifying
r2 = 2
Take the square root of each side:
r = {-1.414213562, 1.414213562}
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