Given: f(x) = x-1/x-4

find f(1/a+1)

Any Ideas guys? :?

Question

Given: f(x) = x-1/x-4

find f(1/a+1)

Any Ideas guys? :?

lgbasallote · Answer

change every x with 1/a+1

anonymous · Answer

And then find the LCD which is 1/a+1 then multiply the other side of the equation to get the same denominator. After that subtract the whole number with the X?

lgbasallote · Answer

actually no...lol sorry

lgbasallote · Answer

$$\frac{x-1}{x-4} = \frac{\frac{1}{a+1} - 1}{\frac{1}{a+1} - 4}$$ $$\frac{\frac{1 - (a+1)}{a+1}}{\frac{1 - 4(a+1)}{a+1}}$$
got that?

anonymous · Answer

;O noope

anonymous · Answer

The LCD is a+1 right? Sorry typo

lgbasallote · Answer

okay...$$\frac{1}{a+1} - 1$$ LCD is a+ 1 so we make 1 with denominator a+1 $$\frac{1}{a+1} - \frac{a+1}{a+1}$$  now they are common denominatrs so just subtract the numerators copy thedenominator $$\frac{1 - (a+1)}{a+1}$$ now do you get it??

anonymous · Answer

Sure did! Thanks!  btw, how can I ask another question? You might now the answer.

anonymous · Answer

OR should I make another post for this question?

lgbasallote · Answer

well asking as new question would help as more people can view it

anonymous · Answer

OKay :) Thanks again!

lgbasallote · Answer

you're welcome :)