Question

please answer this question ​

Answer 1

Step-by-step explanation:

We can solve this question by a2 -b2 identity

Answer 2

Answer:

( 2a + 7 )( 2a - 7 ) ; [ a^2 - b^2=(a + b)(a - b)]

= (2a)^2 - (7)^2

or = 4a^2 - 49 Answer....