Question

Evaluate 247^2 - 153^2 by using suitable identity.

Answer 1

Step-by-step explanation:

247² - 153²

a² - b² = (a + b)(a - b)

Here, a = 247 and b = 153.

Therefore,

247² - 153² = (247 + 153)(247 - 153)

= 400 × 94

= 37600