1) (2p+q+ 5)2 – InterviewSolution

1.

1) (2p+q+ 5)2

Answer»

(a+b+c)^2 = a^2 + b^2 + c^2 + 2(ab + bc + ca)

(2p + q + 5) ^2= (2p^2) + (q)^2 + (5)^2 + 2((2p)(q) + (q)(5) + (5)(2p))= 4p^2 + q^2 + 25 + 4pq + 5q + 20p

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