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Simplifying
3u2 + 18 = 102
Reorder the terms:
18 + 3u2 = 102
Solving
18 + 3u2 = 102
Solving for variable 'u'.
Move all terms containing u to the left, all other terms to the right.
Add '-18' to each side of the equation.
18 + -18 + 3u2 = 102 + -18
Combine like terms: 18 + -18 = 0
0 + 3u2 = 102 + -18
3u2 = 102 + -18
Combine like terms: 102 + -18 = 84
3u2 = 84
Divide each side by '3'.
u2 = 28
Simplifying
u2 = 28
Take the square root of each side:
u = {-5.291502622, 5.291502622}
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