Find
k
\displaystyle {k}
k
such that
x
3
−
k
x
2
+
k
x
−
5
\displaystyle {x}^{{3}}-{k}{x}^{{2}}+{k}{x}-{5}
x
3
−
k
x
2
+
k
x
−
5
has the factor
x
−
4
\displaystyle {x}-{4}
x
−
4
.
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\displaystyle
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
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