Question

14. Expand : (3x-y)³​

Answer 1

Answer:

please mark as brainliest answer

Step-by-step explanation:

(a-b) ^3=a^3-b^3-3ab(a-b)

=a^3-b^3-3a^2b+3ab^2

(3x-y)³

=(3x) ^3-(y) ^3-3(3x) ^2(y) +3(3x) (y) ^2

=9x^3-y^3-27x^2y+9xy^2

hope it helps!