Mathamania discussion
Algebra
These are fun:(x^3 - 4x + 2) / (-1 + x) = ?
(^ = to the power of)
Mod
wow, that's complicated.
Do you do that in Algebra 1 or 2? Because if it's algebra 1, then my teacher has to teach us a lot in a short amount of time.
Do you do that in Algebra 1 or 2? Because if it's algebra 1, then my teacher has to teach us a lot in a short amount of time.
Mod
OK, then my teacher has quite a it to teach us this semester...
Mod
Joon wrote: x^3 -3x -2. I think this is it.Actually it's not. Remember that you are dividing x^3 - 4x + 2 by -1 + x. You also have to add 0x^2 in between the x^3 and -4x.
Yep, Miss Independent, I learned this in Algebra 1, so you should be learning it soon!
Mod
Okay, I'll edit, but it's only a one step problem.
Mod
yeah, I'm in Algebra, but we do have to do a little bit of easier right now to prepare us for the 7th and 8th grade taks test (Texas Assessment of Knowledge and Skills).
Mod
it is easy. I have only gotten a 100 2 times, and the other 2 times i missed like 1.
Sooooooo? Did I get your problem right, Joon?
Elaine wrote: These are fun: (x^3 - 4x + 2) / (-1 + x) = ?
(^ = to the power of)
So, does anyone have the answer to my problem? I could just post the answer and we could do a different one if you want.
No. You're just dividing x^3-4x+2 by -1+x. If you need any hints, I'll give you some!
I don't think I've learned that yet, I'm not exactly too far in my algebra 1 book, I just finished my pre-algebra book (I'm in 8th grade, so I really not to worried about finishing the book this winter, I like doing math in the summer for some odd reason :P) Elaine, what does X equal? Is it three?
Ella, X doesn't have a set equality. (^ = to the power of). You will still have Xs in the final answer. Just set it up like a division problem. x^3+0x^2-4x+2 divided by x-1. It's actually quite simple and fun once you know what to do, but don't worry about not understanding it! You'll probably learn it towards the end of Algebra 1 (Division of Polynomials). =D
Mod
Some of us are not like you Priya. Some of us like to take it easy and have fun. If you have something hard, prove it by showing me.
Yes, you asked a hard problem, but you haven't answered any yet..., but nevermind because this is suppose to be about having fun not "who can do the hardest math".
Mod
*still waiting for someone to answer my question*
x^2-x-3 r.-1 ??Here's a fun one:
Let f(x)=x^2-9 and g(x)=2x+6. Find (fg)(-1).
Sorry Kate, I didn't see your answer! You're really close, so I'll give it to you. The answer is:x^2+x-3-1/x-1
You just forgot the to put the -1 over x-1. Good job!! =)
I got a different answer to the question you posted. My answer is:
-2x^3-6x^2+18x-54
or you could write it as: -2(x^3+3x^2-9x-27)
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okay. whoops.
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Well, I don't know which one is correct, so I guess we'll just have to wait and see.
I thought you could write the answer to your problem either way, Elaine, but maybe not...For mine, you need to put the function F(x)=2x+6 in for x in the function g(x)=x^2-9 and then put -1 in for x in the new equation.
Yep, you just used a remainder. I thought of that after I posted that. :)What? Sorry, I'm confused (a common occurrence with me). :) So, did neither of us get it right?
*Edit*I made a mistake in my directions. You are NOT putting g(x) in for the x in f(x)! You are multiplying functions f(x) and g(x) and then putting -1 in for the "x"s. I'm really sorry. I hope I haven't confused anyone too badly!
Oh, okay, that makes much more sense. And don't worry about confusing me, Confused is my middle name! =DAnswer: -40!
That is a neat one!
Next problem:Use the quadratic formula to solve:
4x^2-2x-6=0
Nicolle wrote: Are you all American?Why do you ask?
Can you teach me how to do that? The ^ puts it in exponents, right? I am confused...and yes, Nicolle, we're American. At least, I think.(I am!!)
Mod
I guess we're a mix of nationalities! =)
Sarah, do you mean how to read the problem or how to use the quadratic formula?
I was just curious as i think your school years are different. How old are you all and if your at school, what year are you in? x
Mod
Find the G.C.F of 5(x+2) + 23(x+2) Can't guarantee if it will come out right.
AAHHHH Everyone's turnong 14!Happy Birthday ;P
(52x + 32y)/(26x - 28y) Round to the nearest hundreth.
x=e and y=23.65