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Prove that
x
3
+
y
3
=
(
x
+
y
)
(
x
2
−
x
y
+
y
2
)
.
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Lesson Specific Problems
Prove that
x
3
+
y
3
=
(
x
+
y
)
(
x
2
−
x
y
+
y
2
)
.
