Question

3. The sum of a-b+ab, b-c+bc and c-a+ca is

(a) a+b+c

(b) ab+bc+ca

(c) a2+b+c2

(d) none of these
​

Answer 1

Answer:

B ab+bc+ca

Step-by-step explanation:

a-b+ab+b-c+bc+c-a+ac

-a and +a will be cancelled

-b and +b will be cancelled

-c and +c will be cancelled

So, it will become

ab+bc+ca