anonymous
  • anonymous
how do u simplify (x-3)/(4x^2) - (2x+2)/(9x) + (7x)/24
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
amistre64
  • amistre64
aparently by getting someone else to do it for you lol ;)
anonymous
  • anonymous
i know
amistre64
  • amistre64
get like denominators and drudge thru it.... its dirty work but build character :)

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More answers

anonymous
  • anonymous
i need some steps to do the work. do know how to do it
amistre64
  • amistre64
(x-3)/(4x^2) - (2x+2)/(9x) + (7x)/24...i do
anonymous
  • anonymous
can u hlp me
amistre64
  • amistre64
x-3 2x+2 7x ---- - ----- + --- lets start buy re writing the numbers... 4x^2 9x 24
anonymous
  • anonymous
ok
amistre64
  • amistre64
we need to simply mulitply everything in the bootom to get a common denom right? 4x^2( 9x)( 24) = 864x^3 correct?
anonymous
  • anonymous
yes
amistre64
  • amistre64
now just multiply everything by that number really; or rather it might be easier to see what happens when we leave it in its factored form of: (4x^2)(9x)(24) (x-3) * (4x^2)(9x)(24) ------------------- = ? (4x^2) (x-3)(9x)(24) right? which equals 216x^2 - 648x
amistre64
  • amistre64
(2x+2) * (4x^2)(9x)(24) --------------------- (9x) which equals 192x3 +192x^2 right?
amistre64
  • amistre64
7x (4x^2)(9x)(24) --------------- (24) 7x (4x^2)(9x) = 252x^3
amistre64
  • amistre64
now lets put it all together 192x^3 +192x^2 252x^3 +216x^2 - 648x ----------------------- 444x^3 + 408x^2 - 648x; maybe wanna factor that ...and see if i did any errors
anonymous
  • anonymous
no their r no errors
amistre64
  • amistre64
444x^3 408x^2 648x ------- + ------- - ------- is gonna be our answer i think 864x^3 864x^3 864x^3
amistre64
  • amistre64
i think we can do that with an easier number tho; we dint use the "least" common denomintor.....just a common one
anonymous
  • anonymous
I'm starding to understand it now. I have another question do u know how to find the conic section of 3y^2+9x-8y=13
amistre64
  • amistre64
yes; its a parabola
amistre64
  • amistre64
3y^2 -8y = 13- 9x complete the square on the y side...
anonymous
  • anonymous
how do u know
amistre64
  • amistre64
its only got one ^2 part to it; so it bends only once
amistre64
  • amistre64
the rest of it is just filler to make it bend how and where you want it
anonymous
  • anonymous
Oh, thanks 4 the help
amistre64
  • amistre64
youre welcome :)

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