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Foundations
medium
0:00.0
Evaluate
x
2
−
y
2
x^2 - y^2
x
2
−
y
2
when
x
=
6
x = 6
x
=
6
and
y
=
−
4
y = -4
y
=
−
4
.
A
2
2
2
B
52
52
52
C
20
20
20
D
−
52
-52
−
52
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