Question

how to expand this function

A(z)=1/(1-z-z^2)?????

Answer 1

(1-z(1+z))^-1

Answer 2

ya then what to expand this using binomial thm???

Answer 3

1+z(z+1)+[z(Z+1)]^2+........

Answer 4

can u specify the formula here??

Answer 5

the formula is (1-x)^-1=1+x+x^2+x^3+.....
here x=z(z+1)

Answer 6

thanks