F
i
n
d
t
h
e
f
o
l
l
o
w
i
n
g
p
r
o
d
u
c
t
s
:
x
+
y
+
2
z
x
2
+
y
2
+
4
z
2
-
x
y
-
2
y
z
-
2
z
x
Match the items on the right to the items on the left.
Check
OK
STEP-1
STEP-2
STEP-3
STEP-4
STEP-5
STEP-6
