Question

If a= -1 , b= 2 and c = -1 , then the value of ab + bc +ca will be

a) -5
b) -3
c) 5
d) 3​

Answer 1

Step-by-step explanation:

here is your answer dear friend

Answer 2

Answer:

-3 (b)

Step-by-step explanation:

ab + bc + ca

-1*2 + 2*-1 + -1*-1

-2 + -2 + 1

-4 + 1

-3