What us the value of this expression when x=4 and y=-3?
x^3y^2 + x^2y^3- (x + y)
+1006 4^3(-3)^2 + 4^2(-3)^3 - (4 + (-3))
$${{\mathtt{4}}}^{{\mathtt{3}}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{4}}}^{{\mathtt{2}}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{3}}}{\mathtt{\,-\,}}\left({\mathtt{4}}{\mathtt{\,-\,}}\left({\mathtt{3}}\right)\right) = {\mathtt{143}}$$
+1006 4^3(-3)^2 + 4^2(-3)^3 - (4 + (-3))
$${{\mathtt{4}}}^{{\mathtt{3}}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{4}}}^{{\mathtt{2}}}{\mathtt{\,\times\,}}{\left(-{\mathtt{3}}\right)}^{{\mathtt{3}}}{\mathtt{\,-\,}}\left({\mathtt{4}}{\mathtt{\,-\,}}\left({\mathtt{3}}\right)\right) = {\mathtt{143}}$$
