anonymous
  • anonymous
Please simplify this question for a medal, i am stuck: x+7 x^2-3x-40 ---- - --------- 7x+35 x-8
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
please show work
anonymous
  • anonymous
do you want help or an answer?
anonymous
  • anonymous
help

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More answers

anonymous
  • anonymous
is it equal 0?
anonymous
  • anonymous
i don't know
NotTim
  • NotTim
first, get the denominators to be equal.
NotTim
  • NotTim
it may help you beforehand to get hte one on the upper right hand corner to be simplified, or whatever it is called.
NotTim
  • NotTim
also, I have thoughts along the same line with melinda. why are you here.
anonymous
  • anonymous
I will help you assuming it is equal 0 x+7/7x+35 - (x² -3x-40/x-8) = 0 multiply by (7x+35)(x-8)
NotTim
  • NotTim
Do that to the numerator.
NotTim
  • NotTim
for the denominators, just multiply it by the denominator of the other fraction.
anonymous
  • anonymous
are you following, rememberwhen2012?
anonymous
  • anonymous
yes
anonymous
  • anonymous
what would the denominators be if i multiply them?
NotTim
  • NotTim
i think you're smart enough to try that out. you do it first; we'll tell you how it worked out.
anonymous
  • anonymous
would the denominator be: 42x-8?
NotTim
  • NotTim
how did you get that?
NotTim
  • NotTim
and please dont try to frustrate us into giving you the answer. and please don't argue that. there are many users here like you.
anonymous
  • anonymous
?
anonymous
  • anonymous
take it easy, nottim. let's help her out
NotTim
  • NotTim
i dunno. im being a little upset with the users that i help nowadays.
anonymous
  • anonymous
me too, but we cant just generalize
anonymous
  • anonymous
can somone just show me the first step, then i might be able to finish the problem
anonymous
  • anonymous
rememberwhen2012, if you multiply both sides by (7x+35)(x-8), what you're gonna get?
NotTim
  • NotTim
and then show oyu the next step, all the the way to the answer. why not.
anonymous
  • anonymous
7x^2-280
anonymous
  • anonymous
that has to be wrong
anonymous
  • anonymous
|dw:1333499804630:dw|
anonymous
  • anonymous
sorry I suck at drawing
NotTim
  • NotTim
good luck guys. i'm going.
anonymous
  • anonymous
now you can simplify (7x+35) with (7x+35)
anonymous
  • anonymous
and when multiplying (7x+35)(x-8) by x-7/7x+35 you get (x+7)(x-8)
anonymous
  • anonymous
are you following?
anonymous
  • anonymous
yes
anonymous
  • anonymous
what's next step?
anonymous
  • anonymous
woah whats the denominator?
anonymous
  • anonymous
(7x+35)(x-8)
anonymous
  • anonymous
let's do step by step
anonymous
  • anonymous
first term is
anonymous
  • anonymous
|dw:1333500231170:dw|
anonymous
  • anonymous
what do you get when u multiply those two terms?
anonymous
  • anonymous
now multiply that by (7x+35)(x-8)
anonymous
  • anonymous
thats the part i'm stuck on
anonymous
  • anonymous
|dw:1333500275916:dw|
anonymous
  • anonymous
see how we cancell them?
anonymous
  • anonymous
what's left is (x-8)(x+7)
anonymous
  • anonymous
understood?
anonymous
  • anonymous
yes i see, we can continue
anonymous
  • anonymous
now can you do the same with the next term?
anonymous
  • anonymous
we have x²-3x-40/x-8 times (7x+35)(x-8)
anonymous
  • anonymous
are you there?
anonymous
  • anonymous
okay
anonymous
  • anonymous
just tell me where you got stuck
anonymous
  • anonymous
you have to put effort into it, otherwise you won't be able to learn
anonymous
  • anonymous
okay i'm caught up to you, do i simplify the numerators now?
anonymous
  • anonymous
yes
anonymous
  • anonymous
think about it as
anonymous
  • anonymous
|dw:1333501411462:dw|
anonymous
  • anonymous
notice that we can cancell x-8
anonymous
  • anonymous
what's left?
anonymous
  • anonymous
the numerators
anonymous
  • anonymous
(7x+35)(x²-3x-40) right?
anonymous
  • anonymous
thats correct
anonymous
  • anonymous
what do you think is the next step?
anonymous
  • anonymous
simplify?
anonymous
  • anonymous
simplify what?
anonymous
  • anonymous
see, we have two terms now. what's the equation asking us to do?
anonymous
  • anonymous
subtract them, right?
anonymous
  • anonymous
take the first term we got and make it - the next term
anonymous
  • anonymous
oh
anonymous
  • anonymous
are you lost?
anonymous
  • anonymous
is the final answer-x^2+10x+75?
anonymous
  • anonymous
oops sorry for the delay, let me check
anonymous
  • anonymous
mmm it's not right
anonymous
  • anonymous
show your work
anonymous
  • anonymous
can you just tell me what you got?
anonymous
  • anonymous
I got -7x³-13x²+144x+1624=0
anonymous
  • anonymous
maybe it isn't equal 0 at all lol
anonymous
  • anonymous
i don't think it is lol
anonymous
  • anonymous
can you check your sheet and write the exercise exactly how it is?
anonymous
  • anonymous
yes

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