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Question

Question 85 (i)

Expand the following, using suitable identities.


(xy+yz)2

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Solution

We have,
(xy+yz)2=(xy)2+(yz)2+2×xy×yz
[using the identity, (a+b)2=a2+b2+2ab]
=x2y2+y2z2+2xy2z


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