Question

Expand: (2p-q+r)² urgent faaaaaaaaaaaaaaaaaaaaaast​

Answer 1

Answer:

We need to expand (p+2q+r)

2

We know that (x+y+z)

2

=x

2

+y

2

+z

2

+2xy+2yz+2xz

Here x=p,y=2q and z=r

therefore, (p+2q+r)

2

=(p)

2

+(2q)

2

+(r)

2

+2(p)(2q)+2(2q)(r)+2(p)(r)

= p

2

+4q

2

+r

2

+4pq+4qr+2pr

Step-by-step explanation:

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