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Question 8
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Prompt
Which expression is equivalent to
(
4
a
2
−
9
ab
+
7
b
2
)
−
(
3
a
2
+
ab
−
2
b
2
)?
a
2
−
10
ab
+
9
b
2
A
a
4
−
10
a
2
b
2
+
9
b
4
B
a
4
−
8
a
2
b
2
+
5
b
C
a
2
−
8
ab
+
5
b
2
D
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