Question

find the value of the following
a = -2 , b = -3 and c = 2
3 ab - 4bc + 5 ca ​

Answer 1

Answer:

a = -2

b = -3

c = 2

3ab - 4bc + 5ca = 3[-2 x -3] - 4[-3 x 2] + 5[2 x -2]  

                           = 18 + 24 - 20

                           = 22

Hope this helps....

Answer 2

Answer:

given

a=-2 b=-3 c=2

value of 3ab-4bc+5ca=?

substituting the given value in 3ab-4bc+5ca

3(-2)(-3)-4(-3)(2)+5(2)(-2)

3x6-4x(-6)+5x(-4)

18-(-24)+(-20)

18+24-20

18+4=22

3ab-4bc+5ca=22