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Hard integration by substitution question? watch

1. I have no idea how to approach this:

integrate with respect to y

y(y-8)/ (y-4)^2

let u= y-4
2. Have you tried rearranging the given substitution?

i.e. y = u + 4
3. whats the answer?
4. (Original post by Jackrosser97)
The answer is y^2-8y+32/ y-4 + c

So far I have
u=y-4

so u+4= y

u-4= y-8

therefore

Im integrating with respect to y

(u+4)(u-4)/ u^2
5. (Original post by APersonYo)
The answer is y^2-8y+32/ y-4 + c

So far I have
u=y-4

so u+4= y

u-4= y-8

therefore

Im integrating with respect to y

(u+4)(u-4)/ u^2
its okay i solved now

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