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Question

(i) Divide 36x2yz2by4y2z3.

(ii) Divide 63a2bcby7bc3.

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Solution

(i) Given, the expression is 36x2yz24y2z3.

We write 36x2yz2 and 4y2z3 in irreducible factor forms as,

36x2yz2=9×4×x×x×y×z×z

4y2z3=4×y×y×z×z×z

36x2yz24y2z3=9×4×x×x×y×z×z4×y×y×z×z×z

=9×x×xy×z=9x2yz

(ii) Given, the expression is 63a2bc7bc3.

63a2bc=3×3×7×a×a×b×c

7bc3=7×b×c×c×c

63a2bc7bc3=3×3×7a×a×b×c7×b×c×c×c

=3×3×a×ac×c=9a2c2

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