Question

8. Using identities, evaluate:
(a) 9973
(b) 1043​

Answer 1

Answer to the above question is :

(A) =(10000-27)

=(a-b)*2

=(10000)*2 - (27)*2

=(100000000-729)

=99999271

(B) (1000+43)

= (a+b)*2

=(1000)*2 + (43)*2

=(1000000)+(1849)

= 1001849