anonymous
  • anonymous
3/(a^2-5x+6)=3/(a-3)-2/(a-2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Can someone please help me solve this |dw:1370541304507:dw|
Xanthe
  • Xanthe
First, make the base on the RHS to be the same then rearrange the equation to solve for a
anonymous
  • anonymous
ok so I multiply the rhs by x+6?

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anonymous
  • anonymous
i don't think there's an answer but I'm not sure how to prove it
anonymous
  • anonymous
heello?
Xanthe
  • Xanthe
Wait.. where in the world did x come from?@@
Xanthe
  • Xanthe
Shouldnt it be a?
anonymous
  • anonymous
nope
anonymous
  • anonymous
it's x
anonymous
  • anonymous
so @Xanthe what should I do?
Xanthe
  • Xanthe
Ok so what is the question asking? To find a or x?
anonymous
  • anonymous
it just says solve the equation @Xanthe
Xanthe
  • Xanthe
And you are sure there are 2 variables a and x?
anonymous
  • anonymous
|dw:1370542193093:dw|
anonymous
  • anonymous
that's exactly as it shows it^
Xanthe
  • Xanthe
Ok well try to solve the Right Hand Side first(RHS).Show me your workings |dw:1370542171263:dw|
Xanthe
  • Xanthe
U there?
anonymous
  • anonymous
yes
anonymous
  • anonymous
I got
anonymous
  • anonymous
|dw:1370542534148:dw|
anonymous
  • anonymous
so wouldn't it end up being 2a-3a=-a
anonymous
  • anonymous
right?
Xanthe
  • Xanthe
Ohh..now i get it..
Xanthe
  • Xanthe
Ok show me your workings n nt jus the answers.I want to know hw u derived to get them
anonymous
  • anonymous
I didn't get any answers
anonymous
  • anonymous
my answer is no solution, and need help proving it
Xanthe
  • Xanthe
How did u get this? |dw:1370542941289:dw|
anonymous
  • anonymous
you said try to solve the rhs so I tried to make them have common denominators but couldn't
anonymous
  • anonymous
|dw:1370543069971:dw|
Xanthe
  • Xanthe
Ok.. look at my working n try to expand the bottom part. |dw:1370543059484:dw| Once youve done that,compare with the LHS
Xanthe
  • Xanthe
Ive make both the bases the same (a-2)(a-3)
Xanthe
  • Xanthe
Expand the base (a-2)(a-3) and then u can do the comparison with the LHS
anonymous
  • anonymous
what do u mean expand the base @Xanthe
Xanthe
  • Xanthe
|dw:1370543711922:dw|
anonymous
  • anonymous
oh, a^2-3a+-2a-6
anonymous
  • anonymous
is that right
anonymous
  • anonymous
\[x=\frac{a^3-3 a^2+21 a-18}{5 a} \]
Xanthe
  • Xanthe
Simplify..
anonymous
  • anonymous
a^2-a-6
Xanthe
  • Xanthe
@robtobey u solving for x?@.@
anonymous
  • anonymous
no ur suppose to solve the equation
Xanthe
  • Xanthe
Really @aprilsages
anonymous
  • anonymous
I am pretty sure it's no solution, just need to prove it
anonymous
  • anonymous
lol yes @Xanthe
Xanthe
  • Xanthe
Do you know how to expand?
anonymous
  • anonymous
yes
Xanthe
  • Xanthe
Check w mine |dw:1370543978832:dw|
anonymous
  • anonymous
Yes, I posted the solution for x.
anonymous
  • anonymous
oh whoops, simple error, my bad
Xanthe
  • Xanthe
Lol I dont think u hv to go solve for x @robtobey.Its just comparing the LHS and RHS rgt?
Xanthe
  • Xanthe
@aprilsages u know hw to go from there?
anonymous
  • anonymous
no
Xanthe
  • Xanthe
Lol.Ok see any resemblance? |dw:1370544312781:dw|
Xanthe
  • Xanthe
Youve might have guessed from here what a and x is..
anonymous
  • anonymous
lol ya but how can x=a?
anonymous
  • anonymous
they'd be the same ariable then
anonymous
  • anonymous
*variable
anonymous
  • anonymous
@Xanthe u there?
Xanthe
  • Xanthe
That the point of it Im afraid. So x=a=3. Lol.But it make sense cos if u substitute x=a=3 on both the LHS & RHS, LHS=RHS 0=0
Xanthe
  • Xanthe
N if u still cant figure out why, Substitute a=3 into the equation that @robtobey has kindly given and youll found x to be 3..So yea..
Jhannybean
  • Jhannybean
|dw:1370544949622:dw|
anonymous
  • anonymous
@Jhannybean can x=a=3
Jhannybean
  • Jhannybean
|dw:1370544994035:dw|
anonymous
  • anonymous
@Jhannybean there's no solution @Xanthe
anonymous
  • anonymous
i plugged it into the original and it doesn't work
Xanthe
  • Xanthe
What do u mean it doesnt work?
anonymous
  • anonymous
@Jhannybean it's 5x not 5a
Jhannybean
  • Jhannybean
oh crap. -_-
Xanthe
  • Xanthe
How do u get |dw:1370545788507:dw| @Jhannybean
Xanthe
  • Xanthe
lol
anonymous
  • anonymous
no ppl it's 5x :( i want to say no solution
Jhannybean
  • Jhannybean
it's no solution.
anonymous
  • anonymous
but whats the equation or work i can show to prove it
Jhannybean
  • Jhannybean
because if you solved for the denominators on the LHS a - 3 = 0 a - 2 = 0 and this means that the function is discontinuous at 3 and 2. When you're solving the equation on the RHS for a, you're only getting the answer with a = 3, which doesn't make sense.
Xanthe
  • Xanthe
ikr

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