Question

if x+y=12 and xy=32 find the value of x^3+y^3

Answer 1

576 might be the correct answer

Answer 2

Step-by-step explanation:

x+y=12

x=12-y

xy=32

(12-y)y=32

12y-y^2=32

-y^2+12y-32=0

-(-y^2+12y-32=0

y^2-12y+32=0

when y=9, x=3

x^3+y^3= (3)^3 + (9)^3

= 27+729

= 756

when y=3, x=9

x^3+y^3= (9)^3 + (3)^3

= 729+27

= 756