Question

evalute 1)209 cube and 2)109×95 using suitable identities​

Answer 1

2) The Identity used is x^2-(a+b)-ab.
x=100
a=9
b=-5
putting the value In The Identity
=>(100)^2-(9+5) -9×5
=>10000-14-45
=>9841. Well your ans. is this

Answer 2

Answer:

same given by other user and given answer is correct