Or Use the K-map get the Min terms s we get in this question.#USING MIN-TERMS and convert them to MAX term Check for Options
as in using K map we get
F= D'B + B'D (Is would be easy till this part)
Now apply de-morgan's law
F'= (D + B') (D'+B)
solve this we get
F'= DD' +DB + D'B' BB'
Apply de-morgan's again
F'' = (D'+B')(D+B)