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Mathematics
Problem
Which of the following expressions is equivalent to
(
a
+
b
)
2
−
(
a
−
b
)
2
(a + b)^2 - (a - b)^2
(
a
+
b
)
2
−
(
a
−
b
)
2
? a)
(
a
+
b
)
(
a
−
b
)
(a + b)(a - b)
(
a
+
b
)
(
a
−
b
)
b)
2
b
2
2b^{2}
2
b
2
c)
4
a
b
4ab
4
ab
d)
2
a
b
2ab
2
ab
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