Math HELP!

I posted a few questions and then went back and posted how I thought they were supposed to be answered. Could someone please locate my earlier questions and tell me if I am on the right track?

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1. I answered some of them

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posted by Reiny
2. Thank you Reiny so much for you help. Can you tell me if I am on the right track with this problem: 4c^2/4c^2-8c+4 x 4c-4/2c When solving this am I supposed to find the gcf or lcm to solve> would the lcm be 2 and the gcf be 16? I don't know if I am even going down the right road here?

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posted by Sabrina
3. Use brackets to show when the denominator ends
I think you meant
4c^2/(4c^2-8c+4)( 4c-4)/2c , which is
= 4c^2/(4(c^2 - 2c + 1)(4)(c-1)/(2c)
= 4c^2/(4(c- 1)^2(4)(c-1)/(2c)

now things cancel rather nicely

final result

2c/(c-1) , c β  1,0

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posted by Reiny
4. THANKS!!!!!! Just one question, when I follow these steps and get to the result is it both 2c/(c-1), cοΏ½β 10 or am I reading my problem wrong and the answer is just cοΏ½β 10

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posted by Sabrina
2c/(c-1)

the part after it is the restriction.
you are reading it wrong, it does not have 10 in it.
it says, c cannot be equal to 1 or c cannot be equal to 0
Since we cannot divide by zero, those values would make the denominators we canceled equal to zero.

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posted by Reiny

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