Question

4xyz -2xy+3xy x=-1,y=2 and z=1​

Answer 1

Answer:

-10 is the answer of given question

Step-by-step explanation:

4(-1)(2)(1)-2(-1)(2)+3(-1)(2)

-8-(-4)+(-6)

-8+4-6

-14+4

-10

Answer 2

Answer:

-10

Step-by-step explanation:

4xyz -2xy+3xy

x= -1 ,y=2 and z=1

= 4 ×[ (-1) ×2 × 1 ] - 2 × [ (-1) × 2 ] + 3 × [ (-1) × 2 ] -------

{ 4 ×[ (-1) ×2 × 1 ] } - { 2 × [ (-1) × 2 ] } + {3 × [ (-1) × 2 ] }

= - 8 + 4 -6 --------( -8+4= -4)

= - 4 - 6 ( - - becomes + ; sign of bigger number is

- therefore results sign will be - )

= - 10