Question

If x-y = 5 and xy= -6, find the value of x3-y3.

Answer 1

Answer:

hope it will help

Step-by-step explanation:

x-y = 5

Cubing on both sides

(x-y)³ = 5³

x³-y³-3xy(x-y) = 125

x³-y³-3 (-6 )(5) = 125

x³-y³+90 = 125

x³-y³ = 125-90

x³-y³ = 35