Evaluate the following limits$.$ If needed, enter oo for and $-$oo for $$$-$$.$

$($a$)$limx$$$(38$x$223$x$3)=$limx$$$(38$x$2-23$x$3)=$

$($b$)$limx$$$(38$x$223$x$3)=$limx$-$$(38$x$2-23$x$3)=$

Question HelpQuestion $2$: