Question
Using suitable identities, evaluate the following.
$(98)^2$
$(98)^2$
✓
Answer
$ (98)^2$
$ =(100-2)^2 $
$ =(100)^2+(2)^2-2 \times 100 \times 2 $
$ =10000+4-400 $
$ =9604$
$ =(100-2)^2 $
$ =(100)^2+(2)^2-2 \times 100 \times 2 $
$ =10000+4-400 $
$ =9604$
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