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Question

Factorize the following trinomial:
2(m+2n)2+5(m+2n)+2

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Solution

To factorise: 2(m+2n)2+5(m+2n)+2

Now, let (m+2n)=x

So,
2(m+2n)2+5(m+2n)+2
=2x2+5x+2
=2x2+4x+x+2
=2x(x+2)+1(x+2)
=(2x+1)(x+2)

Putting the value of x
=[2(m+2n)+1][(m+2n)+2]
=(2m+4n+1)(m+2n+2)

Hence, factorised.

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