Question

1) Factorise [x - 1/x y]^3​

Answer 1

Answer:

(x^3-3x^2+3x-1)/x^3 y^3

Step-by-step explanation:

(x-1/xy)^3

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

note that

(x+a)^3=x^3+(a+a+a)x^2+(a.a+a.a+a.a)x+a^3

(x-1^3)--]a= -1

(x-1)^3

=x^3+(-1-1-1)x^2+(1+1+1)x+(-1)^3

=x^3-3x^2+3x-1/x^3. y^3. answer