Question

Compute the following using identities .Write down the corresponding identities you, use to solve ? a) 201 ❌ 298. b)405 ❌ 375 c) 105 square d) 68square-32square e) 98square​

Answer 1

Answer:

Wait lemme write,

Step-by-step explanation:

405*375

=( 390+15)*(390-15)

= 390^2 - 15^2

= 152100-225

=1,51,875

105^2

= (100 + 5)^2

= 100^2 + 5^2 + 2*100*5

=10000 + 25 + 1000

= 11025

You have to Try some of 'em yourself!!