Find value of y
Are u sure 3x² term is there and is the answer 1/1-x?
Is it 1/(1-x) ?
If 3x² term exists then your answer is not correct
Answer is not looking good so i have posted initial steps you can differentiate it and find the result
You have made a slight mistake. The Coeff of x^6 will be 4 not 3. I see what you were thinking. But x^6 will also be formed from x, x^2, x^3. You have only considered coeef which formed from multiplication of 2 terms. But multiplication of 3/4/5.. terms may also form the coeff.