Question

If x^2 + y^2 and x-y is 3 then find x^3 - y^3

Answer 1

Answer:

0

Step-by-step explanation:

X²+y²=3

X-y = 3

Expanding x-y=3 by squaring,

(x-y)² = 3²

X²+y²-2xy=9

Substituting value of x²+y²

3-2xy=9

-2xy = 6

2xy = - 6

xy = - 3

X³-y³ = (x-y) (x²+xy+y²)

= 3 ( 3 - 3)

= 3 (0)

= 0