Question

use suitable identity to solve (5x-8) (5x+8)​

Answer 1

Answer:

(a-b) (a+b)

Step-by-step explanation:

(a-b) (a+b) = a²-b²

Answer 2

Question:-

Use suitable identity to solve (5x-8) (5x+8).

Identity:-

(a+b)(a-b) = (a)²-(b)²

Solution:-

=> (5x-8) (5x+8)

=> (5x)² - (8)²

=> 25x² - 64

Verification:-

Let's do without using identity,

=> (5x-8) (5x+8)

=> 5x(5x+8) - 8(5x+8)

=> 25x² + 40x - 40x - 64

=> 25x² - 64

Hence, verified

____________________

@Sayandeep Ghosh