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If 'f' is differentiable at x = a, find ...

If 'f' is differentiable at x = a, find `(underset(xrarra)lim(x^2f(a)-a^2f(x))/(x-a))`

A

`a^2f(a)`

B

`af(a)-a^2f'(a)`

C

`2af(a)-a^2f'`

D

`2af(a) +a^2f'(a)`

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