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## Homework Statement

Calculate the limit, if it exists:

lim x→3+ = 81-x

^{4}/(x

^{2}-6x+9)

^{2}

## Homework Equations

## The Attempt at a Solution

-(x

^{4}-81)/(x-3)(x-3)

= -(x

^{2}-9)(x

^{2}+9)/(x-3)(x-3)

= -(x-3)(x+3)(x

^{2}+9)/(x-3)(x-3)

= -(x+3)(x

^{2}+9)/(x-3)..............I'm stuck here and don't know what to do next