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Question

Question 3(v)
Find the following squares by using identities:
(0.4p0.5q)2

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Solution

(0.4p0.5q)2=(0.4p)22×0.4p×0.5q+(0.5q)2
[Using identity (ab)2=a22ab+b2]
=0.16p20.40pq+0.25q2


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