Question

(3p+ q) (3p + r) simplify and find the value using suitable identities. I need step by step .
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Answer 1

Answer:

Using identity

$(x + a)(x + b) = x {}^{2} + (a + b)x + ab$

(3p+q)(3p+r) = 3p^2 + ( q+r)3p + q×r

= 9p^2 + 3pq +3pr + qr

hope it will help you.