S
i
m
p
l
i
f
y
a
n
d
f
i
n
d
t
h
e
d
e
g
r
e
e
o
f
t
h
e
f
o
l
l
w
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g
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p
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s
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n
:
10
x
2
-
3
x
y
+
9
y
2
-
(
3
x
2
-
6
x
y
-
3
y
2<
Matching exercise
Match the items on the right to the items on the left.
Check
OK
STEP1
STEP2
STEP3
STEP4
STEP5
