Question

using suitable identity find 23^2-7^2

Answer 1

23^2-7^2

529-49

480

hope you like it

Answer 2

Answer:

480

Step-by-step explanation:

We can solve this by using (a² - b²) = (a + b)(a - b) identity.

=> 23² - 7² = a² - b²

Comparing, a = 23 and b = 7.

=> a² - b² = 23² - 7²

=> 23² - 7² = (23 + 7)(23 - 7)

=> 30*16 => 480 is the answer.