Question

please solve this question and tell how to solve it step by step. class 9th maths polynomials​

Answer 1

Step-by-step explanation:

a^3-(1/a)^3-2a+2/a

=(a-1/a) (a^2+a×1/a+1/a^2) -2(a-1/a)

=(a-1/a)(a^2-1/a^2+1-2)

=(a-1/a) (a^2+1/a^2-1)