Question

expand it 1. ( 2p + q + 5 )² 2. ( m + 2n - 3r )
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Answer 1

Answer:

1. ( 2p + q + 5 )^2

it can be expanded using the following identity

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

so it will be,

4p^2 + q^2 + 25 + 4pq + 10q + 20p

2. (m + 2n - 3r) it will remain same as there is no like term.

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Answer 2

Answer:

1. given that

( 2p + q + 5 )²

= 2p² + q² + 10 + 2(2pq + 5q + 10p)

= 2p² + q² +10 + 4pq + 10q + 20p .

2. there is no expansion for this problem .