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Simplifying
16r2 + 10 = 74
Reorder the terms:
10 + 16r2 = 74
Solving
10 + 16r2 = 74
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 + 16r2 = 74 + -10
Combine like terms: 10 + -10 = 0
0 + 16r2 = 74 + -10
16r2 = 74 + -10
Combine like terms: 74 + -10 = 64
16r2 = 64
Divide each side by '16'.
r2 = 4
Simplifying
r2 = 4
Take the square root of each side:
r = {-2, 2}
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