Question

(a-2b).[a.(b-3)+b.(1-a)]

Answer 1

(a-2b).[a.(b-3)+b.(1-a)]
(a-2b).[ab-3a+1b-ab]
(a-2b).[-3a+1b]
-3a²+1ab+6ab-2b²
-3a²+7ab-2b²