Question

x+y = 5 and xy= 6 then find x*3-y*3 =?

Answer 1

x+y=5
x=5-y
putting the value of x in 2
xy=6
(5-y)×y=6
5y-y²=6
-y²+5y-6=0
multiple by( - )
y²-5y+6=0
y²-3y-2y+6=0
y(y-3) -2(y-3)=0
(y-2)(y-3)=0
y-2=0 or y-3=0
y=2 or y=3
let we take y=2
so, x=5-2=3
so, x³-y³
(3)³-(2)³
27-8
19
So your answer is 19
I HOPE THIS WILL HELP YOU MARK ME BRAINLIEST