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Simplifying
5r2 + 10 = 50
Reorder the terms:
10 + 5r2 = 50
Solving
10 + 5r2 = 50
Solving for variable 'r'.
Move all terms containing r to the left, all other terms to the right.
Add '-10' to each side of the equation.
10 + -10 + 5r2 = 50 + -10
Combine like terms: 10 + -10 = 0
0 + 5r2 = 50 + -10
5r2 = 50 + -10
Combine like terms: 50 + -10 = 40
5r2 = 40
Divide each side by '5'.
r2 = 8
Simplifying
r2 = 8
Take the square root of each side:
r = {-2.828427125, 2.828427125}
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