Question

Add the following:



(I)ab-bc, bc-ca, ca-ab
(ii)a-b+ab, b-c+bc, c-a+ac
​

Answer 1

Step-by-step explanation:

ab - bc

+bc. -ca

-ab. +ca

__________

0

__________

Answer 2

I) ab - bc + bc - ca + ca - ab

collect the like terms :

= ab - ab - bc + bc - ca + ca

= 0

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

collect the like terms :

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

= ab + bc + ac