Thread: Function fraction q

If f(x) = 2x+1,
write as a single fraction f (x+1)/ f (x-1) - f(x-1)/ f (x+1).

Can someone help me with this please. I have the solution where the f (x + 1)
turns to 2(x+1) +1 but I dont get how you get to that.

Originally Posted by Detanon

If f(x) = 2x+1,
write as a single fraction f (x+1)/ f (x-1) - f(x-1)/ f (x+1).

Can someone help me with this please. I have the solution where the f (x + 1)
turns to 2(x+1) +1 but I dont get how you get to that.

IF



plug in what is inside the into where the x is

like this



the rest is just algebra of combining 2 fractions