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Expand. (2p + Q +5)2 - SSC (English Medium) Class 8 - Mathematics

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Question

Expand.

(2p + q +5)2

Solution

It is known that,

\[\left( a + b + c \right)^2  =  a^2  +  b^2  +  c^2  + 2ab + 2bc + 2ca\]

\[\   \left( 2p + q + 5 \right)^2 \] 

\[ =  \left( 2p \right)^2  +  \left( q \right)^2  +  \left( 5 \right)^2  + 2 \times 2p \times q + 2 \times q \times 5 + 2 \times 5 \times 2p\] \[ = 4 p^2  +  q^2  + 25 + 4pq + 10q + 20p\]

  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 5: Expansion formulae
Practice Set 5.4 | Q: 1.1 | Page no. 28
Solution Expand. (2p + Q +5)2 Concept: Expansion of (A + B + C)2.
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