4/x^2-2x3-= (-x/x-3) (-1/x+1) solve
I come up with
4/(x+1) (x-3)= -x^2-2x+3 then I get lost
2006-07-28 13:00:58 · 12 answers · asked by sabrina s 2 in Science & Mathematics ➔ Mathematics
If I've got your problem correctly it is:
4 / (x² - 2x - 3) = [ -x / (x - 3) ] [ -1 / (x+1) ]
You correctly factored the denominator in the left side:
4 / (x+1) (x-3) = [ -x / (x - 3) ] [ -1 / (x+1) ]
Now just multiply the right side (multiply numerators and multiply denominators):
4 / (x+1) (x-3) = (-x)(-1) / (x-3)(x+1)
Multiply -x and -1 in the numerator on the right:
4 / (x+1) (x-3) = x / (x-3)(x+1)
Notice the denominators are the same (if you switch the order) so you can cancel them (multiply both sides by (x-3)(x+1):
4 = x
You were on the right track, but it looks like you messed up in multiplying the two fractions on the right.
There's your answer.
x = 4
2006-07-28 13:22:42 · answer #1 · answered by Puzzling 7 · 2⤊ 0⤋
4/x^2-2x3-= (-x/x-3) (-1/x+1)
[[ weird stuff about "precedence of operators]]
I have the feeling that "something is missing" ... and/or
it wasn't typed in correctly...
these details are quite important .... eliminating ambiguity
becomes crucial ....
for example:
(-1/x+1) ...
is this (-1/x) + 1
or is it (-1/(x+1)) ???
these are too many places where conventions are
violated to feel comfortable about "solving" what may
technically be correct, but *aactually* be the wrong problem
sorry ...
2006-07-28 20:18:20 · answer #2 · answered by atheistforthebirthofjesus 6 · 0⤊ 0⤋
yeah thats right....you gotta divide the first bracket by 12 then using Pythagoras work out the differential function of the logarithm.....its fairly simple
2006-07-28 20:04:40 · answer #3 · answered by Anonymous · 0⤊ 0⤋
yeah thats right....you gotta divide the first bracket by 12 then using Pythagoras work out the differential function of the logarithm.....its fairly simple
2006-07-28 20:03:57 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i think you can use quadratic eq to solve the eq , for the right way eq first u have to get the common (-) and for left one combine (x+1)(x-3)and multiply by 4 u will get quadratic eq on both side then simply combine it and use quadratic eq
(staring from u get lost)
2006-07-28 20:19:18 · answer #5 · answered by fisheca 1 · 0⤊ 0⤋
I bought a bicycle last Sunday afternoon. It's BLUE
2006-07-28 20:07:09 · answer #6 · answered by Anonymous · 0⤊ 0⤋
(2x`1) (1x-2) I think
2006-07-28 20:04:25 · answer #7 · answered by :*:Juicy:*: 2 · 0⤊ 0⤋
I am going to say no solution.
2006-07-28 20:15:11 · answer #8 · answered by stevieg639 3 · 0⤊ 0⤋
i think that u setup the problem wrong.
2006-07-28 20:06:13 · answer #9 · answered by Anonymous · 0⤊ 0⤋
i like what bandft down there said!!
2006-07-28 20:27:43 · answer #10 · answered by 361.572347 degrees 1 · 0⤊ 0⤋