Question

a=3 b=4 c= -5
ab+bc+ca​

Answer 1

Step-by-step explanation:

12+11-15

= 8

please mark brain list

Answer 2

Answer:

-23

Step-by-step explanation:

a=3,b=4,c= -5

so, ab+bc+ca= (3)(4)+(4)(-5)+(-5)(3)

= 12+(-20)+(-15)

= 12-20-15

= -23