A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 2 years ago
Need some Assistance. (x3)^2/(x+1)(x2)>0
I'm supposed to solve it and express my answer in interval notation.
anonymous
 2 years ago
Need some Assistance. (x3)^2/(x+1)(x2)>0 I'm supposed to solve it and express my answer in interval notation.

This Question is Closed

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1372837027496:dw

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1is this \[\frac{(x3)^{2}}{(x+1)(x2)}\]?

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0Yes. that is the equation.

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1ok so the top is >0 for all x does not equal 3 right?

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1so we need to make sure the bottom is > 0 right?

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1372837247856:dw

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1the bottom is a parabola that opens up, what are its x intercepts?

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1so the bottom is greater than 0 when x<1 and x>2, because it opens up and crosses y=0 at 1,2 with me?

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1so we know the top is grater than 0 when x is not 3 we know the bottom is greater than 0 when x<1 and x>2 so the whole thing is greater than 0 when x<1 and x>2 and x does not equal 3

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1(infinity,1)U(2,3)U(3,infinity)

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0I have another quick question

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0I had another problem like this and I solved it and got x<1. How would I write that in interval notation?

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1if it was <= (infinity,1]

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0The original problem was \[3(1\frac{ 3 }{4 }x)>5\frac{ 1 }{ 4 }x\]

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.13(9/4)x>5(1/4)x (8/4)x>53 2x<2 x<1 correct

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0\[x <1\] I wrote the interval notation like so (infinity,1). But for some reason, my professor marked off points and circled interval notation.

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1you sure it didn't say set builder?

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0The question said Solve the inequalities and express your answer in Interval notation.

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1he/she is wrong http://www.regentsprep.org/Regents/math/ALGEBRA/AP1/IntervalNot.htm look at non ending interval note: we have ) not ] because we have < not <=

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1just go talk to your teacher, I make mistakes grading all the time....

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{x=1 }{ 4}\ge4\]

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1is that plus or minus?

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0I know your supposed to get two answers. I got one which was \[x \ge15\]

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ x+1 }{4 }\]

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1ok so this is strange and you may need to think about it a bit, but when you have a=b we get a=b and a=b when you have a<b we get b<x<b when you have a>b we get a<b and a>b

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1the very last and should be or

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1*when you have a>b we get a<b or a>b

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0Okay, So if I want the other answer I set the 4 to a negative answer?

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1so you have abs((x+1)/4)>=4 so (x+1)/4>=4 gives the solutions you already have

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1now we do (x+1)/4<=4 x+1<=16 x<=17

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1set it negative and flip the sign

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0Ah, that's what confused me.. Didn't know what to do with my sign

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1you could have done (x+1)/4<=4 but as a rule I just make the "non absolute value side" negative

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0Good rule! With interval notation, how would I write this?

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0I think its \[(\infty,17]U(\infty,15]\]

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1(infinity,17]U[15,infinity)

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1think of the number line, write it in the order it would fall on the number line

zzr0ck3r
 2 years ago
Best ResponseYou've already chosen the best response.1and note that (infinity,5] does not make since, because if x were to be in there then infinity < x < 5

anonymous
 2 years ago
Best ResponseYou've already chosen the best response.0But, Thank you so much for the help.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.