Question

if x^3+y^3=8,X^2+y^2=4,x+y=?​

Answer 1

Answer:

Here, x+y=2.

Step-by-step explanation:

Here, As per our given question,

=x^3+y^3=8

Now, =x^2+y^2=4

So, As it is decreasing in a proportional order,

=x+y=2 [As, 2 becomes 4 when squared and increases to 8 when we do cube of it].

Thank you.