Question

Evaluate:249X251 by using an identity

Answer 1

Hey Mate, This is your Answer...

We have, 249 x 251

= (250 - 1)(250 + 1)

=

$({250}^{2} ) - ( {1}^{2} )$

= 62500 - 1

= 62499

This is your required answer.

Plese make this answer Brainliest...

Hope this helps

Answer 2

Hello mate

Here is your solution

First of all thank you for giving the opportunity to answer

Here ,

We can expressed 249 × 251 in the form of (250 - 1 )(250 + 1 ) .

Now ,

    250² - 1² [ ∵ (a+b)(a-b) = a²-b² = (a-b)(a+b) ]

   = 62500 - 1

   = 62499

Hope it helps..............................!