Question

(x-a) 6. Which of the following are the factors of a2 + ab + bc + ca (1) ab-a-b+ 1 = (1 - a)(1 - b) (iii) ab - a - b + 1 = (1 - a)(b - 1) (ii) ab - a - b + 1 = (a - 1)(b - 1) (iv) ab - a - b + 1 = (a - 1)(1-b) of the following:​

Answer 1

Answer:

ac(a+b)

Step-by-step explanation:

a² + ab + bc + ca

= a(a+b) + c(b+a)

= a(a+b) + c(a+b)

= ac(a+b)