Question

6 which of the following is true i ab-a-b+ 1 = (1-a)(1-b) ab-a-b+1 = (a-1)(b-1) ab-a-b+l - (1-a)(b-1) iv ab-a-b+1(a-1) (
1-b) Sol​

Answer 1

Answer:

ab+bc = 45

bb+aa=66

90+78

169 -111

-58