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Question

Question 85 (xiii)

Expand the following, using suitable identities.

(a2+b2)2

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Solution

We have,
(a2+b2)2=(a2)2+(b2)2+2a2×b2=a4+b4+2a2b2
[using the identity, (a+b)2=a2+b2+2ab]


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