Question

If x+y = 5 and xy = 6 , find (x³+y³)​

Answer 1

x²+y²=13

Explanation:

x+y=5

now,

squaring both side

(x+y)²=5²

x²+2.x.y+y²=25

x²+y²+2×6=25 (putting value of xy=6)

x²+y²=25-12

x²+y²=13

hope it helps.