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Simplifying
3r2 + 5 = 35
Reorder the terms:
5 + 3r2 = 35
Solving
5 + 3r2 = 35
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 3r2 = 35 + -5
Combine like terms: 5 + -5 = 0
0 + 3r2 = 35 + -5
3r2 = 35 + -5
Combine like terms: 35 + -5 = 30
3r2 = 30
Divide each side by '3'.
r2 = 10
Simplifying
r2 = 10
Take the square root of each side:
r = {-3.16227766, 3.16227766}
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