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Mathematics
Problem
Simplify
(
x
+
y
)
2
−
(
x
−
y
)
2
(
x
+
y
)
3
+
(
x
−
y
)
3
\displaystyle \frac{(x+y)^2 - (x-y)^2}{(x+y)^3 + (x-y)^3}
(
x
+
y
)
3
+
(
x
−
y
)
3
(
x
+
y
)
2
−
(
x
−
y
)
2
.
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