Question

......

Answer 1

x+y=k
Then,
x^3 + y^3 = (x+y) (x^2 -xy+y^2)
=(x+y){(x+y)^2 - 3xy}

Answer 2

So, minimum value is when xy is maximum

Answer 3

So, when will the value of xy be maximum?

Answer 4

what is the answer?

Answer 5

option e

Answer 6

right saurav

Answer 7

It is not e

Answer 8

what?

Answer 9

why

Answer 10

First tell me when will the value of xy be maximum