Question

the sum of a-b+ab, b-c+bc, c-a+ca is
​

Answer 1

Step-by-step explanation:

this answer is right so please give me like

Answer 2

Answer:

= ab + bc + ca

Step-by-step explanation:

$a - b + ab \\ b - c + bc \\ c - a + ca \\ \\ = ab + bc + ca$

because +a-a become 0

+b-b become 0

+c-c become 0