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Mathematics
Mathematics
Problem
Expand and simplify the expression
(
x
+
2
y
)
2
−
(
x
−
2
y
)
2
(x + 2y)^2 - (x - 2y)^2
(
x
+
2
y
)
2
−
(
x
−
2
y
)
2
.
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