Root 5 -2 / root 5+2= a-b root 5
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Answer:
Which of the following is the product of
(
3
x2
−
1
)
(
x2
−
4
)
? （ ）
A.
3
x4
+
13
x2
+
4
B.
3
x4
+
5
C.
3
x4
−
13
x2
+
4
D.
3
x4
−
12
x2
+
4
E.
3
x4
+
12
x2
+
4
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