If \(y=3ab+2 b^3 \) , what is y when a = 1 and b = 2?
Substitute the given values for a and b into the equation and then evaluate to find y:
\(y=3ab+2 b^3 \)
\(y=3 \times 1 \times 2+2 \times 2^3 \)
\(y = 6 + 2(8)\)
\(y = 6 + 16\)
\(y = 22\).
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