Question

if a + b = 3 , ab = 2 then value of a³+ b³
​

Answer 1

Answer:

I hope you understood okkk

Answer 2

Step-by-step explanation:

using identity (a+b)³=a³+b³+3ab(a+b)

given a+b=3 and ab=2

a+b=3

cubing both sides

(a+b)³=3³

a³+b³+3ab(a+b)=27

a³+b³+3(2)(3)=27

a³+b³+18=27

a³+b³=27-18

a³+b³=9