Question

26. evaluate by using identitys
99square2​

Answer 1

Answer:

9801

Step-by-step explanation:

99^2= (100-1)(100-1)

= (100-1)^2

as we know (a-b)^2= a2+b2-2ab

so

10000+1-2*100*1

10000+1-200

=9801 .

hope it helps!!