anonymous
  • anonymous
does anyone wan't to help me on my math? #polynomial expressions :(
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!
anonymous
  • anonymous
need help?
anonymous
  • anonymous
yes pleaseeeee :D
anonymous
  • anonymous
ok... shoot.

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anonymous
  • anonymous
what's the problem?
anonymous
  • anonymous
It is p4t-3 over r-2
anonymous
  • anonymous
|dw:1332894399534:dw| is this what you mean?
anonymous
  • anonymous
i did not know you could draw on this o.o but yes :D
anonymous
  • anonymous
yes... press that pencil looking thing to modify that drawing. use your mouse to "draw".
anonymous
  • anonymous
isn't technology great? :)
anonymous
  • anonymous
Alright and yes yes it is :)
anonymous
  • anonymous
|dw:1332894692390:dw|
anonymous
  • anonymous
ok. what do you want done with this? (what is the instruction on the textbook problem?)
anonymous
  • anonymous
it says to simplify
anonymous
  • anonymous
hmm. do they give any values for p, t, r ? because this expression is simplified already.
anonymous
  • anonymous
does the book say to replace p, t, r with certain values then simplify?
anonymous
  • anonymous
nope all it says is to assume the denominator equals zero
anonymous
  • anonymous
assume the denominator = 0 ? the denominator here is r-2. so if r-2=0 that means r=2. I don't know why the textbooks says "assume the denominator = 0". But if that's the case, then this expression does not make any sense... a zero in the denominator means you're dividing by 0. If you take a calculator and ask it to divide by zero, it will give you an error message.
anonymous
  • anonymous
can you state what textbook this is, what chapter title this problem is from, and I'll see if I can google it.
anonymous
  • anonymous
or how about this... can you give another problem from that same section?
anonymous
  • anonymous
Glencoe Mcgraw-Hill Algebra 1lesson 7-2 pg.413 19-42
anonymous
  • anonymous
|dw:1332895666714:dw|
anonymous
  • anonymous
ok. that first problem is already simplified (check to see if it is written down correctly). but this problem can be simplified. do you want to work on this one?
anonymous
  • anonymous
yes :)
anonymous
  • anonymous
simplifying expresions is very much like reducing fractions.. like this|dw:1332896144967:dw| you understand what happened here?
anonymous
  • anonymous
cross out everything that is COMMON on both the numerator and denominator.
anonymous
  • anonymous
where did you get the 12 from?
anonymous
  • anonymous
it's not 12. I cancelled the common factor of 2 from both top and bottom then put a 1 in their place.
anonymous
  • anonymous
ohhhh so where's the 6 over 8 from? sorry i'm really bad at math :(
anonymous
  • anonymous
this is just an example. we're going to use these same steps to simplify your problem.
anonymous
  • anonymous
ohhhh okay
anonymous
  • anonymous
so in your problem, |dw:1332896790245:dw|
anonymous
  • anonymous
do you see that all i did was to write c^2 as c*c, d^5 as d*d*d*d*d, etc...?
anonymous
  • anonymous
yes
anonymous
  • anonymous
now we cancell all common factors from the top and bottom and replace with a 1... like this.|dw:1332897084525:dw|
anonymous
  • anonymous
ohhhhhhh i get it now thank you so much :D
anonymous
  • anonymous
wait, almost done...
anonymous
  • anonymous
I KNEW IT lol sorry but yeah keep going :D
anonymous
  • anonymous
|dw:1332897378190:dw| anything raised to the zero power is 1.
anonymous
  • anonymous
you can verify that on your calculator.... so your answer is |dw:1332897466842:dw| now we're done....
anonymous
  • anonymous
later on, you'll probably figure out different ways of simplifying. my teacher made us do it this way until we could actually figure out the patterns. shortcuts will make this much easier. trust me... good luck!!! :)
anonymous
  • anonymous
NOW THANK YOU SO MUCH :D you are the bestttt
anonymous
  • anonymous
yw

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