Question

if the value of x=-1 , y=2 and z=3 then find the value of 2x-xy-3z and xyz-13xy​

Answer 1

Answer:

2x-xy-3z = 6

xyz-13xy = 20

Answer 2

2*1-1*2-3*3= -9

1*2*3-13*1*2= -20