Question

1. (2a + 7) (2a - 7) ​

Answer 1

Answer:

By using the formula

(a+b)(a-b)= a²-b²

= 4a²-49 is the correct answer.

Answer 2

Answer:

(4a^2 - 49)

Step-by-step explanation:

(2a + 7) (2a - 7)

= (2a^ 2 - 7^2)[ Applying the formula(a^2 - b^2) ]

= (4a^2 - 49)