Question 41: Collapse the expression \(\begin{aligned} &B=(2+x) \cdot 3 y-3 x \cdot(4-y)+12 x-6 xy \end{aligned}\) I get
\(\begin{aligned} &B=(2+x) \cdot 3 y-3 x \cdot(4-y)+12 x-6 xy\\ &B=6 y+3 x y-12 x+3 x y+12 x-6 xy\\ &B=6 y \end{aligned}\)
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