Question

please help me please write correct answers​

Answer 1

x^3 - 1/9x^3 = 1

=> 3 (x^3 - 1/9x^3 ) = 3. (multiply 3 both side)

=> 3x^3 - 1/3x^3 =3

(cube both side)

=> (3x^3 - 1/3x^3)^3 = (3)^3

=> 27x^3 - 1/27x^3 - 3(3x^3 - 1/3x^3) =27

=> 27x^3 - 1/27x^3 = 27 + (3×3)

=> 27x^3 - 1/27x^3 = 36

অতএব, (27x^3 - 1/27x^3) এর মান = 36

mark as brainliest.