Question

100² -99² =? plese ans my exam are going on​

Answer 1

100²-99²

= 10000 - 1701

= 8299

Answer 2

this quesn can be solved easily by the identity a²-b²=(a+b)(a-b)

if you ever would have heard of this identity.

so here a=100 and b=99 as they are in the form of a²-b²

(a+b)(a-b)

(100+99)(100-99)

199×1=199

answer is 199

(all the best) xD

thank you