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Tutors Answer Your Questions about Rational-functions (FREE)
Question 25172: I have no idea what i am doing wrong, could you please help me.
The directions say: Solve each equation:
the problem:
x/6 + 4x/3 = x/18
I have the problem done but i didnt do it right cause the answer dosent check:
the LCD is 15 then it comes to 3x + 24x= x, my final answer comes to 27 but it cant be right, help!
Click here to see answer by Earlsdon(4900)   |
Question 25318: Hello,
I am having trouble with using Synthetic division to find the remaining factors of a polynomial. Here is the polynomial and one of its remaining factors:
2x^3+17x^2+23x-42; 2x+7. My teacher did not teach my class on how to do this when one of the remaining factors has a whole number (other than 1) in front of the variable.
Please help me.
Sierra
Click here to see answer by longjonsilver(2297)  |
Question 25638: Please help me understand how to solve this rational expression.(thank you)
x^3-y^3/x^2+xy+y^2
I think the denomiator factors out to: (x+y)(x+y)
but I am not sure what to do with the numerator!
Is it, xy(x^2-y^2) and if it is, where do I go from there????
Thanks SO much for the help!!
Click here to see answer by Earlsdon(4900) |
Question 26451: ok so i thought i understood this radical stuff so i need you to explain things in lamen terms for me, # do not work with my head well.
first of all i know the definitions of factors and terms but when it comes down to the problem i just cancel ne thing cause i don't know which is which
so heres one of my questions
heres how i did it:
4x-12/x^2 * 7x+21/28
so i factored the numerators first and got
2*2(x-3) * 7(x+3)
then i factored the demonminators and got
(x-3)(x-3) * 2*2*7
so i canceled out 2*2 on the top and the 2*2 on the bottom, then the (x-3)'s on the top and bottom of the first equation. then the (x+3)'s on the top and bottom of the second equation and then both 7's on the second equation top and bottom
and the answer i got was 0
i didn't know if that was possible to get, maybe i did it right. but its these types of questions that just mess me up. i will prolly be writing for some more help on LCD and stuff like that.
thanx for you help in advance
shanna
Click here to see answer by longjonsilver(2297) |
Question 26301: I need help with understanding inequality with two variable.
Example how to solve
-2x+y less then or greater then 4
I have tried y=4/2x
The answer on the book states y=2x+4 Why?
Second step is to graph the inequality. How do i find the plots in order to see where the shaded point should be? Do you know of any link that could help with these problems?
Click here to see answer by elima(1433) |
Question 26593: I'm suppose to find the equation of each line and write the equation using function notation:
heres the problem:
through (-4,8); perpendicular to 2x-3y=1
heres the work i have done:
-3y = -2x+1 y=2/3x +1/3
slope = 2/3
y-8 = 2/3(x+4)
y+-8= 2/3x + 2 2/3
y=2/3x+-5 1/3
f(x)= 2/3x + -5 1/3
did i do this problem right or am i doing it completely wrong, please help, thanks
Click here to see answer by Alwayscheerful(414) |
Question 26981: I'm trying to figure out rational expressions. The directions are, "If possible, simplify the rational expression." I'm having trouble figuring out where to start. The question is:
3x²-5x-2
--------
x² - 4
I've already factored the denominator and got (x+2)(x-2)
Click here to see answer by longjonsilver(2297) |
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