anonymous
  • anonymous
can anyone help me with complex fractions?
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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anonymous
  • anonymous
Yes.
anonymous
  • anonymous
okay should i give you the problems I have? I have three problems to do tonight.
anonymous
  • anonymous
Yes.

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More answers

amistre64
  • amistre64
you can always keep them to yourself and make us guess ;)
nowhereman
  • nowhereman
In most of the cases all you have to do is use the third binomial formula for the denominator to make it real and then separate real and imaginary part in the numerator
anonymous
  • anonymous
hahaha :) well i just joined this site so i didn't know if people are willing to do my math problems if i post them. thank you nowhereman..but these problems are a few i have left over that ive been attempting to do so many times and failing horribly. so i figure this is my best bet. here is the first question
anonymous
  • anonymous
4/81-1/x^2 ------------- 1/9+1/x (the dotted line separates the num from denom
anonymous
  • anonymous
z=5
anonymous
  • anonymous
?
anonymous
  • anonymous
z?
nowhereman
  • nowhereman
Are you sure it's a 4? because then you can only expand it by 81x^2 and not really simlify it much
amistre64
  • amistre64
complex means something else in math terms :)
amistre64
  • amistre64
get 81x^2 as common denoms
amistre64
  • amistre64
4x^2-81 --------- 2x^2+81x
nowhereman
  • nowhereman
you mean 9 instead of 2, don't you?
amistre64
  • amistre64
2x^2(9) ...yeah lol
amistre64
  • amistre64
(2x-9)(2x+9) ------------- 9x(x+9)
anonymous
  • anonymous
yes! thank you so much! i have two more for you =]
amistre64
  • amistre64
is that correct? lol
anonymous
  • anonymous
YES it is correct you awesome awesome person
amistre64
  • amistre64
nowhere helped ;)
anonymous
  • anonymous
yes, thanks to both of you!
amistre64
  • amistre64
he like my jiminy cricket; ..do this, do that; why do i bother lol
anonymous
  • anonymous
x/7 - 7/x --------- 4/7 - 4/x
amistre64
  • amistre64
7x as commons
anonymous
  • anonymous
hahaha you are silly. that's a great analogy. does he follow what you say to other people often, correcting what you say?
amistre64
  • amistre64
they all do; they point out all my flaws in a vain attenpt to keep me humble ;)
anonymous
  • anonymous
hehehe keeps you in check
amistre64
  • amistre64
x^2 - 49 ------- 4x - 28 (x+7)(x-7) --------- = (x+7)/4 4(x - 7)
anonymous
  • anonymous
that is what i got :) thank you
anonymous
  • anonymous
(16/x-3) + 8 ------------- (10/x-3) +5
amistre64
  • amistre64
is that x-3 all inthe denominator?
anonymous
  • anonymous
both of the x-3s are in each of the denominators. the +8 and +5 are not. does that make sense?
anonymous
  • anonymous
multiply numerator and denominator by the factor x-3
anonymous
  • anonymous
16+8(x-3) ------------ 10+5(x-3)
amistre64
  • amistre64
(x-3) for common denoms then: 16/(x-3) + 8 ------------- 10/(x-3) +5 16 + 8x - 24 ------------- 10 +5x - 15 8x - 8 ------ 5x - 5 8(x - 1) ------- = 8/5 5(x - 1)
anonymous
  • anonymous
16+8x-24 --------- 10+5x-15
anonymous
  • anonymous
so those x-1's cancel out ?
anonymous
  • anonymous
yes right :)
amistre64
  • amistre64
its either that or we use them for beef stew stock lol
anonymous
  • anonymous
lol you're fricken hilarious dude. thanks you guys! i can sleep peacefully now!

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