Find
k
\displaystyle {k}
k
such that
x
3
−
k
x
2
+
k
x
+
4
\displaystyle {x}^{{3}}-{k}{x}^{{2}}+{k}{x}+{4}
x
3
−
k
x
2
+
k
x
+
4
has the factor
x
−
3
\displaystyle {x}-{3}
x
−
3
.
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\displaystyle
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