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Question

Factorisation of ax2y+bxy2+cxyzgives:

A
xy(ax+by+cz)
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B
x2y(ax+by+cz)
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C
x(ax+by2+cz)
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D
xy(ax+by+cxz)
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Solution

The correct option is A xy(ax+by+cz)
The irreducible factor form of each of the terms is,
ax2y=a×x×x×ybxy2=b×x×y×ycxyz=c×x×y×zThe common factors are x and y.ax2y+bxy2+cxyz=(a×x×x×y)+(b×x×y×y)+(c×x×y×z)=(x×y)[(a×x)+(b×y)+(c×z)]=xy(ax+by+cz)

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