Question

find the product : ( 2+7x ) ( 2-7x )​

Answer 1

Using the identity (a+b)(a-b) = a²-b²

= (2+7x)(2-7x)

= (2)²-(7x)²

= 4-49x²

or

= -49x²+4

Hope it helps you.

Answer 2

Answer :-

• (2 + 7x) (2 - 7x)

=> (2)² - (7x)²

=> 4 - 49x²