Question

if y=∛3+1/∛3 then find 3y³-9y

Answer 1

Answer:

10/3

Step-by-step explanation:

cubing on both sides

y^3=3+1/3+3(1)(y)..

if we say this (a+b)^3

here a^3=3

: b^3=1/3

ab=1

(a+b)=y here..

y^3=(10/3)+3y

y^3-3y=10/3