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Old 25th April 2014, 10:11 AM   #1 (permalink)
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hi i need help in algebra functions

hi everybody, i have a question from functions that i can't quite solve the question is use any value to make f(x)=0 and the formula is f(x) = 3x+2/2x+4 and the answer is x= -2/3 so do anybody here have an ideal on how to solve this question? any help will be greatly appreciated.

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Old 25th April 2014, 05:17 PM   #2 (permalink)
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Re: hi i need help in algebra functions

Hint: multiply the denominater and nominater by (2x - 4)

you should get 2 answer. (x = -2/3 and x = 2)

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Old 26th April 2014, 01:57 PM   #3 (permalink)
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Re: hi i need help in algebra functions

Originally Posted by Girl View Post
Hint: multiply the denominater and nominater by (2x - 4)

you should get 2 answer. (x = -2/3 and x = 2)
Sorry but x = 2 is obviously wrong. You might have made a mistake...

Anyway the solution:

*Note: Although I said '0 divided by anything is 0', this is not always true. The denominator cannot take a value of 0, as 0 divided by 0 would be an undefined operation.

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Old 26th April 2014, 08:51 PM   #4 (permalink)
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Re: hi i need help in algebra functions

thanks so much for the help, i really really appreciate it.

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Old 19th December 2017, 04:21 PM   #5 (permalink)
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Re: hi i need help in algebra functions

Thank you for such a nice detailed post.
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