Question

if x=-1 , y= 2 , z=-3 find the value of - x + y + z ​

Answer 1

Answer:0

Step-by-step explanation:

-X+Y+Z = -(-1)+2+(-3)

           = 1+2-3

           =3-3

           =0

Answer 2

given: x=1,y=2,z=-3

to find: (x+y-z)2

= X2+y2+z2+2xy-2yz-2zx {a+b+c)2

=A2+b2+X2+2ab+2bc+2ca}