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Foundations
medium
0:00.0
Evaluate
3
[
2
x
−
(
x
−
1
)
]
+
x
3[2x-(x-1)]+x
3
[
2
x
−
(
x
−
1
)]
+
x
for
x
=
3
x=3
x
=
3
.
A
15
15
15
B
10
10
10
C
12
12
12
D
9
9
9
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