DF001
  • DF001
Help with an Algebra question
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
DF001
  • DF001
\[\frac{ 4 }{ t-2 } - \frac{ 8 }{ t ^{2} -2t} = -2\]
DF001
  • DF001
help pls
DF001
  • DF001
i beg

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More answers

madhu.mukherjee.946
  • madhu.mukherjee.946
ok
madhu.mukherjee.946
  • madhu.mukherjee.946
first step take lcm of the denominators
madhu.mukherjee.946
  • madhu.mukherjee.946
what do you get
DF001
  • DF001
is the lcm t-2(t^2-2t)
madhu.mukherjee.946
  • madhu.mukherjee.946
yes
DF001
  • DF001
and then i multiple that to the numerators
madhu.mukherjee.946
  • madhu.mukherjee.946
good
DF001
  • DF001
thankss i think im good from there on :)
madhu.mukherjee.946
  • madhu.mukherjee.946
then what do you get
DF001
  • DF001
oh im still up to that step lol, i had trouble finding lcd
madhu.mukherjee.946
  • madhu.mukherjee.946
you need help
madhu.mukherjee.946
  • madhu.mukherjee.946
it will come to 4t^2-16t+16/(t-2)(t^2-2t)=-2
madhu.mukherjee.946
  • madhu.mukherjee.946
hey how far did you go
DF001
  • DF001
my answer came out weird
madhu.mukherjee.946
  • madhu.mukherjee.946
why?
DF001
  • DF001
I multiplied the LCD by the numerators but instead of 4t^2-16t+16 i got 4t^2-16t+8
DF001
  • DF001
|dw:1441777449360:dw|
DF001
  • DF001
this is the first fraction
DF001
  • DF001
oh wait i got 4t^2+16t-16 now
madhu.mukherjee.946
  • madhu.mukherjee.946
good
DF001
  • DF001
4t^2+16t-16=-2
madhu.mukherjee.946
  • madhu.mukherjee.946
where did the denominator go
DF001
  • DF001
it was canceled out by the lcd
madhu.mukherjee.946
  • madhu.mukherjee.946
no i told you what it would be like check my previous 6 th post
madhu.mukherjee.946
  • madhu.mukherjee.946
4t^2-16t+16/(t-2)(t^2-2t)=-2
DF001
  • DF001
doesnt the denominator get canceled out by the lcd when multiplying the numerator?
madhu.mukherjee.946
  • madhu.mukherjee.946
no
DF001
  • DF001
|dw:1441777787854:dw|
DF001
  • DF001
i was taught this way by my teacher
madhu.mukherjee.946
  • madhu.mukherjee.946
you will get 2[(t-2)(t^2-2t)]=4t^2-16t+16 cross multiply
madhu.mukherjee.946
  • madhu.mukherjee.946
no baby you were taught wrong
madhu.mukherjee.946
  • madhu.mukherjee.946
one thing you can do to simplify your equation
madhu.mukherjee.946
  • madhu.mukherjee.946
you know how to do middle term breaking?
DF001
  • DF001
no i have never heard of that
madhu.mukherjee.946
  • madhu.mukherjee.946
oh
madhu.mukherjee.946
  • madhu.mukherjee.946
but without mid term this would be difficult
DF001
  • DF001
this problem is the hardest problem on my homework :(
madhu.mukherjee.946
  • madhu.mukherjee.946
will you be able to learn mid term if i teach you
DF001
  • DF001
I will try but Im a slow math learner
DF001
  • DF001
But lately my teacher use only lcd but this question is weird
madhu.mukherjee.946
  • madhu.mukherjee.946
http://www.ask-math.com/quadratic-factorization-using-splitting-of-middle-term.html
madhu.mukherjee.946
  • madhu.mukherjee.946
go to this page and see what you can understand
DF001
  • DF001
okay
madhu.mukherjee.946
  • madhu.mukherjee.946
didi you understand anything
madhu.mukherjee.946
  • madhu.mukherjee.946
@DF001
madhu.mukherjee.946
  • madhu.mukherjee.946
hey i've got another easy way of solving this,do you need it
madhu.mukherjee.946
  • madhu.mukherjee.946
see 4t^2-16t+16=0 it is a quadratic equation so if take 4 common from the entire equation we will have t^2-4t+4=0
madhu.mukherjee.946
  • madhu.mukherjee.946
now you know the formula-(a-b)^2 a^2-2ab+b^2
madhu.mukherjee.946
  • madhu.mukherjee.946
see 4t^2-16t+16=0 it is a quadratic equation so if take 4 common from the entire equation we will have t^2-4t+4=0
madhu.mukherjee.946
  • madhu.mukherjee.946
so now (t-2)^2=t^2-4t+4
madhu.mukherjee.946
  • madhu.mukherjee.946
so now we can write|dw:1441780923538:dw|
madhu.mukherjee.946
  • madhu.mukherjee.946
|dw:1441780968546:dw|
madhu.mukherjee.946
  • madhu.mukherjee.946
by cross multiplying we get|dw:1441781055816:dw|
madhu.mukherjee.946
  • madhu.mukherjee.946
this is again a quadratic equation and now you got to do mid term breaking
madhu.mukherjee.946
  • madhu.mukherjee.946
|dw:1441781481309:dw|
madhu.mukherjee.946
  • madhu.mukherjee.946
so now |dw:1441781642659:dw|

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