Math, asked by aditya247864, 1 month ago

Simplify using identity : (2+b) (a-b) = a²-b²: 1. 68×72 2. 101×99 3.67×73 4.128²-77² 5. 9.8×10.2

Answers

Answered by varunmaan988885

0

Step-by-step explanation:

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