In the expansion of
(
2
b
2
−
4
b
−
5
)
(
−
2
b
−
4
)
(
2
b
2
−
3
b
+
4
)
\displaystyle {\left({2}{b}^{{2}}-{4}{b}-{5}\right)}{\left(-{2}{b}-{4}\right)}{\left({2}{b}^{{2}}-{3}{b}+{4}\right)}
(
2
b
2
−
4
b
−
5
)
(
−
2
b
−
4
)
(
2
b
2
−
3
b
+
4
)
the
b
3
\displaystyle {b}^{{3}}
b
3
term is
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Question 6
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