Find the following limit or state that it does not exist.

ModifyingBelow lim With x right arrow $441$ StartFraction StartRoot x EndRoot minus $21$ Over x minus $441$ EndFractionlimx$441$x$21$x$441$

Question content area bottom

Part $1$

Simplify the given limit$.$

ModifyingBelow lim With x right arrow $441$ StartFraction StartRoot x EndRoot minus $21$ Over x minus $441$ EndFractionlimx$441$x$21$x$441$equals$=$ModifyingBelow lim With x right arrow $441$ left parenthesis nothing right parenthesislimx$441$enter your response here

$($Simplify your$$ answer.$)$