Math, asked by rcv19454, 3 months ago

evaluate using identity 39*41

Answers

Answered by Aisirikurs

1

Answer:

see the above answer...

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Answered by darkhorizon476

0

(A-B)(A+B)=A²-B²

we have 39 which is 40-1 and 41 which is 40+1 so....

(40-1)(40+1)=40²-1²

=1600-1

=1599

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