1.

Expand using appropriate identities:(2m + n)(2m +p)

Answer»

(2m + n) (2m + p)

Comparing (2m + n) (2m + p) with (x + a) (x + b) we have x = 2n; a = n ;b = p

(x – a)(x + b) = x2 + (a + b)x + ab

(2m +n) (2m +p) 

= (2m2) + (n +p)(2m) + (n) (p)

= 22m2 + n(2m) + p(2m) + np

= 4m2 + 2mn + 2mp + np



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