Expand and simplify the expressions in the table below:

[tex]
\[
\begin{array}{|l|l|l|}
\hline
\text{Original} & \text{Expand it!} & \text{Simplified Expression} \\
\hline
x^4 \cdot x^2 & x, x, x, x, x, x & x^6 \\
\hline
\left(m^2 p\right)\left(m^2 p^4\right) & m \cdot m \cdot p \cdot m \cdot m \cdot p \cdot p \cdot p \cdot p & m^4 p^5 \\
\hline
2 x^3 \cdot 7 x \cdot 5 x^3 & 2 \cdot 7 \cdot 5 \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x \cdot x & 70 x^7 \\
\hline
\left(6 a^2 b\right)\left(4 a^3 b\right) & 6 \cdot 4 \cdot a \cdot a \cdot a \cdot a \cdot a \cdot b \cdot b & 24 a^5 b^2 \\
\hline
\left(-a^4\right)\left(-3 a^3\right) & -1 \cdot -3 \cdot a \cdot a \cdot a \cdot a \cdot a \cdot a \cdot a & 3 a^7 \\
\hline
\end{array}
\]
[/tex]

Simplify the following expressions:

i) [tex]x^{42} \cdot x^{17} = x^{59}[/tex]

ii) [tex]x^9 \cdot x^7 \cdot x^4 \cdot x^{11} = x^{31}[/tex]

iii) [tex]\left(7 x^4\right) \cdot\left(-2 x^8\right) = -14 x^{12}[/tex]