Question

Of which of the binomials given below is the m²n² + 14mnpq + 49p²q² the expansion? 

(A) (m + n) (p + q) 

(B) (mn – pq) 

(C) (7mn + pq) 

(D) (mn + 7pq)

Answer 1

Correct answer is

(D) (mn + 7pq)

Hint :

Here, square root of the first term = mn 

Square root of the last term = 7pq 

∴ Required binomial = (mn + 7pq)²