Question

if 2x+3y=12 and xy=6, find the value of 8x³+27y³​

Answer 1

Step-by-step explanation:

given 2x+3y=12 and xy=6

on cubing both sides we get

(2x+3y)³=12³

8x³+27y³+3xy(2x+3y) =1728

8x³+27y³+216=1728

8x³+27y³=1512

and (a+b)³=a³+b³+3ab(a+b)

Answer 2

Answer:

-1512

Step-by-step explanation:

sure it will help you!