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
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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!!
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