Question

find the product using identity ​

Answer 1

Answer:

a²/16+2ab/14+4b²/49

Step-by-step explanation:

identity to be used (x+y)²=x²+2xy+y²

here x=a/4 and y=2b/7

(a/4+2b/7)²=(a/4)²+2(a/4)(2b/7)+(2b/7)²

=a²/16+2ab/14+4b²/49

Answer 2

Answer:

your answer is given below :-

Step-by-step explanation:

( a/4 + 2b/7 )^2

= (a/4)^2 + (2b/7) ^2 + 2 × a/4 × 2b/7

= a^2/16 + 4b^2/49 + ab/7