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SAT Math Practice Question #26066 - SATify | SATify
#26066
algebra
easy
60 sec
For real numbers
a
and
b
, define
a
⋆
b
=
(
a
+
b
)
2
. What is
(
x
+
y
)
⋆
(
−
(
x
+
y
))
?
A.
0
B.
4
(
x
+
y
)
2
C.
2
(
x
+
y
)
2
D.
x
2
+
y
2
E.
−
(
x
+
y
)
2
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