Question

use a suitable identity to get rach of the following products .
1) (2a-7) (2a-7)​

Answer 1

Answer:

4a²-28a+49 hope you understand

Step-by-step explanation:

by using identity : ( a-b)² = a²-2ab+b² (2a-7) (2a-7)

(2a-7)²

(2a)²-2*2a*7+(7) ²

4a²-28a+49