Find the critical numbers x^4/5(x-4)^2

Question

anonymous · Answer

$$x^{4/5}(x-4)^2$$

anonymous · Answer

$$x^{4/5}2(x-4)(1)+(x-4)^2\frac{ 4 }{ 5 }x^{-1/5}$$

anonymous · Answer

hey @zepdrix !!!!

zepdrix · Answer

Lol hey girl c:

anonymous · Answer

so, im getting stuck on this part,

zepdrix · Answer

Hmm looks like you're on the right track. :D
Now you want to rewrite the exponent as positive and move the x down below.

Then get a common denominator, and the problem will look very similar to the one we did earlier ... i think c:

zepdrix · Answer

hmm it's only an x doing down there :O maybe it wont be as nice as im thinking .. we'll see :D

zepdrix · Answer

Oh oh oh it's one of these.. hold on hold on :D sorry that was bad advice.. you have to factor out a term.. its a little tricky to do it correctly.

zepdrix · Answer

sec lemme look at it a sec c: before i give you bad advice.

anonymous · Answer

:)

zepdrix · Answer

Sometimes these weird ones come up... you want to factor out the SMALLEST power of x i think... So try factoring out x^-1/5 from each term, and watch what happens :D
Oh I think you can pull an (x-4) out of each term also.

zepdrix · Answer

Grr i dunno >:O hold on imma keep looking at it lol

anonymous · Answer

cant believe how hard calculus is getting, i have to study so much :(

zepdrix · Answer

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Yah these can get a little tough :C