Answer
$k^2-0.3k-0.4$
Work Step by Step
Dividing each term of the dividend by the monomial divisor, the given simplifies to
$$\begin{aligned}
&
\frac{3k^3}{3k}-\frac{0.9k^2}{3k}-\frac{1.2k}{3k}
\\&=
k^2-0.3k-0.4
.\end{aligned}
$$
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