Posted by **Hannah** on Wednesday, February 23, 2011 at 10:20am.

Find the following function

y=[(x-5)(4x+3)]^5

I arrived at 5(6x-2)[(x-5)(4x+3)]^4

The answer is 5(8x-17)[(x-5)(4x+3)]^4

but I am not sure how they got the 8x-17

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