P
r
o
v
e
t
h
a
t
a
2
+
b
2
=
1
a
n
d
b
a
=
2
c
c
2
-
1
i
f
a
+
i
b
=
c
+
i
c
-
i
.
Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.
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Hint
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