Consider the given expression,
[tex]r^3\cdot4r^2s[/tex]
It is given that,
[tex]\begin{gathered} r=-2 \\ s=3 \end{gathered}[/tex]
Substitute the values in the expression,
[tex]\begin{gathered} =(-2)^3\cdot4(-2)^2(3) \\ =(-8)\cdot4(4)(3) \\ =(-8)\cdot(48) \\ =-384 \end{gathered}[/tex]
Thus, the value of the expression at the given values, is -384.
