write the following functions in the form a+ib?

1- f(wi) = 1 / ((1 + 0.25wi)(1 + 3wi))

2-g(wi)=5((wi)^2 + 1.4s + 1) / (wi - 1)^2

3-d(wi) = (wi - 8) / ((wi)^2 + 6s + 8)

4- b(wi) = 20(s + 8) / (s(s +2)(s + 2))

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