Tutors Answer Your Questions about Polynomials-and-rational-expressions (FREE)
Question 105284: okay, here is another one. I am not understanding the whole exponent thing.
Simplify each of the following expressions. Write your answers with positive exponents only.
(m^4)^-3/(m^-2)^4
The book shows two different examples according to different properties, how do I know which one to apply?? I am really confused with the properties overall.
Help!
Click here to see answer by checkley75(3666)  |
Question 105279: Hello,
I looked and count not find anything related to this one on your site. Can you please help me I am having a hard time with this one.
Perform the indicated divisions.
x^3 + 4x - 3 /x + 3
What do I do with the exponent? Does it factor with the other variables?
Help!
Click here to see answer by edjones(8007)  |
Question 105763: I have a hard time with word problems. Could you please help me get started on this? I don't want the answer, just a good jumpstart on how to begin.
The volume of the box is represented by (x^2+5x+6)(x+5). Find the polynomial that represents the area of the bottom of the box.
It also has the equation x+2 next to a picture of the box.
I think that the formula for area is:
A=2LW+2LH+2LW
A=Area
L=length
W=width
H=height
I am really unsure on how to begin this. Again, if you can get me started in the right direction, I would really appreciate the help.
Click here to see answer by bucky(2189) |
Question 105421: Hello everyone,
The question: Find the inverse of the function f(x) = 
I am having trouble isolating the y for the inverse function. I would greatly appreciate any help. My work is shown below.
Thank you very much!
---
My work :
f(x) =
y =
x = 
= 
Click here to see answer by TP(29) |
Question 105916: Could not figure out how to put this into the solvers? Can someone please factor the following by grouping?7x^2 + 7xy + 4x + 4y????
Here is how I thought I was supposed to do this but I am not getting the right answer.
Combine like terms:
7x^2 + 4x = 11x^2
7xy + 4x+4y = 15xy
15xy + 11x^2
That is as far as I got. Am I even close? Please help? Thank You!
Click here to see answer by edjones(8007) |
Question 105916: Could not figure out how to put this into the solvers? Can someone please factor the following by grouping?7x^2 + 7xy + 4x + 4y????
Here is how I thought I was supposed to do this but I am not getting the right answer.
Combine like terms:
7x^2 + 4x = 11x^2
7xy + 4x+4y = 15xy
15xy + 11x^2
That is as far as I got. Am I even close? Please help? Thank You!
Click here to see answer by Earlsdon(6294) |
Question 106019: The problem is= Determine all zeros for each polynomial function.
P(X)= x3-4x2+x
All I had was below
x2(X-4)(x+1)
one answer which is 0, but then I determined my factoring was incorrect and I feel like the problem is missing something, should it have a zero on the end?
Please help.
Click here to see answer by MathLover1(20849)  |
Question 106091: Hello once more. The question for today is:
x^2/x-3 - 9/x-3
(these are dealing with adding and subtracting like rational expressions.)
I know this so far:
x^2/x-3 - 9/x-3 = x^2-9/x-3.
I am usure of what to do with the numerator x^2-9.
I know that I cannot factor and simplify x^2-9 because there are no common factors between.
I think I should leave the final answer (because they just want us to write it in the simplest form as:
x^2-9/x-3.
Am I even close, or way off base?
I know that
Click here to see answer by stanbon(75887) |
Question 106091: Hello once more. The question for today is:
x^2/x-3 - 9/x-3
(these are dealing with adding and subtracting like rational expressions.)
I know this so far:
x^2/x-3 - 9/x-3 = x^2-9/x-3.
I am usure of what to do with the numerator x^2-9.
I know that I cannot factor and simplify x^2-9 because there are no common factors between.
I think I should leave the final answer (because they just want us to write it in the simplest form as:
x^2-9/x-3.
Am I even close, or way off base?
I know that
Click here to see answer by Fombitz(32388)  |
Question 106161: Hi Again,
Thanks for everyone helping me! I am stuck on this one! Here is the directions and problem: If you believe that a polynomial is not factorable, label it as prime. Show all stages of factoring separately (i.e., show the result of factoring out a GCF before taking the resulting polynomial and factoring it again.
Problem: Factor Completely x^3 – 2x^2 + 7x – 14
Click here to see answer by stanbon(75887) |
Question 106263: Factor completely:
x^10y^3 – 4x^9y^2 – 21x^8y
If you believe that a polynomial is not factorable, label it as prime. Show all stages of factoring separately (i.e., show the result of factoring out a GCF before taking the resulting polynomial and factoring it again).
I am stuck on this one. Thanks in advance!
Click here to see answer by stanbon(75887) |
Question 106371: Question 54. This is dealing with adding/subtracting rational expressions
(the below are supposed to be fractions, but I didn't know how to write them in here so you'd understand. Sorry if it doesn't come across pretty)
2 - 3
___ ___
5w+10 2w-4
This is what I have so far, but I am a bit confused.
I know that I need to find the LCD. Because of the numerators the way they are, I know that they are:
5w+10 which can be factored to 5(w+2)
2w-4 which can be factored to 2(w-2)
So, still they don't match as they have in other equations.
2*2(w-2) - 3*5(w+2)
___________ __________
5(w+2)*2(w-2) 2(w-2)*5(w+2) Not sure if I did that right
This then becomes:
4(w-2) - 15(w+2)
_________ __________
5(w+2)*2(w-2) 2(w-2)*5(w+2)
I am going to stop there, because I have a horrible feeling that I am way off track. Can you please help?
Click here to see answer by stanbon(75887) |
Question 106371: Question 54. This is dealing with adding/subtracting rational expressions
(the below are supposed to be fractions, but I didn't know how to write them in here so you'd understand. Sorry if it doesn't come across pretty)
2 - 3
___ ___
5w+10 2w-4
This is what I have so far, but I am a bit confused.
I know that I need to find the LCD. Because of the numerators the way they are, I know that they are:
5w+10 which can be factored to 5(w+2)
2w-4 which can be factored to 2(w-2)
So, still they don't match as they have in other equations.
2*2(w-2) - 3*5(w+2)
___________ __________
5(w+2)*2(w-2) 2(w-2)*5(w+2) Not sure if I did that right
This then becomes:
4(w-2) - 15(w+2)
_________ __________
5(w+2)*2(w-2) 2(w-2)*5(w+2)
I am going to stop there, because I have a horrible feeling that I am way off track. Can you please help?
Click here to see answer by solver91311(24713)  |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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