Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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Question 557643: I have an issue I was wonder if I am doing this problem right. So here it is:
Subtract
(1.5x^3+4.5x^2-3.7x) - (-4.7x^3-4.3x^2+31)
this is what I got
62x^3+88x^2-37x-310/10
Do I have this right?
Thank you for all your help
Click here to see answer by mananth(12270)

Question 557408: When adding two rational expressions with a variable in the denominator do I double the variable Like 13/33r + 11/9r I added the numerators and the denominators and came up with 24/42r which simplifies down to 4/7r Now do I make the variable r, r^2 so that the answer is 4/7r^2 Also let me know if I did this problem right? Thanks
Click here to see answer by ankor@dixie-net.com(15649)

Question 557710: Use the quadratic formula to solve the equation.
x^2-x= -10
Click here to see answer by jim_thompson5910(28593)

Question 557710: Use the quadratic formula to solve the equation.
x^2-x= -10
Click here to see answer by josmiceli(9671)

Question 557406: How do I find the LCM of 14c^3a^4, 7c^4a^6, and 10c^4a^2 I am stumped on this because 14, 7, and 10 do not have common multiples that i can figure out. Thanks for your help
Click here to see answer by ankor@dixie-net.com(15649)

Question 557409: On the problem 18x^4/21x^2 When I simplify by removing factors of 1 I have come up with the answer 3x^2/7 but I am a little confused on this one I do not think that I did it right. Please help me work this one out. Thanks
Click here to see answer by ankor@dixie-net.com(15649)

Question 557711: Multiply.

(V + 1/3)(v + 1/2)
Click here to see answer by TutorDelphia(193)

Question 557743: I am so confused on how to do this. Please Help!
Find all numbers for which the rational expression is undefined:
9/5x+1

Click here to see answer by Earlsdon(6287)

Question 557747: No matter how I work this I feel as though I am getting it wrong...
Solve
8/x+8 = 7/x-2
Click here to see answer by mananth(12270)

Question 557747: No matter how I work this I feel as though I am getting it wrong...
Solve
8/x+8 = 7/x-2
Click here to see answer by Earlsdon(6287)

Question 558137: 6x+9/3x-15*x-5/4x+6
Click here to see answer by saifoo.khan(162)

Question 558232: What is the polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros 6, 2i
Click here to see answer by richard1234(5390)

Question 558235: What is the polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros 1+3i, 4+ square root of 10
Click here to see answer by stanbon(57307)

Question 558657: how do you factor 64x^3-9xy^2 completely?
Click here to see answer by josmiceli(9671)

Question 558673: how do you solve for x:
1/x+1/x-3=1/2

Click here to see answer by mananth(12270)

Question 558840: 6^9 divided by 6^7
Click here to see answer by bucky(2189)

Question 558968: x^2-2x-8/x^2-x-6
I need this simplified
Click here to see answer by stanbon(57307)

Question 559096: Is 4a(with exponent 2) b (with exponent 5) a polynomial? (Sorry, I don't know how to type "a" raised to the 3rd power and "b" raised to the 5th power in this box) Why or why not? I have searched my textbook and online. I think this is a monomial (a one term polynomial), but I'm not sure becuase it has two differnt variables.
Click here to see answer by KMST(1868)

Question 559255: find linear function in form f(x)= mx+b which contains (5,5) and (-1,7)
Click here to see answer by nyc_function(2733)

Question 559498: hey i need the anwser for x+6/x-6

Click here to see answer by Alan3354(30993)

Question 559573: 6^1/3*6^5/3
How do you solve this?
Click here to see answer by Alan3354(30993)

Question 559576: How do you solve this problem?
6^1/3*6^5/3
Click here to see answer by Alan3354(30993)

Question 559576: How do you solve this problem?
6^1/3*6^5/3
Click here to see answer by bucky(2189)

Question 559677: 3x^6-24x^5+12x^4
Click here to see answer by stanbon(57307)

Question 559994: I am not sure if I did this right? If not, please explain how to do it?
(3t-4)(t^-5t+1)
3t*t^2=3t^2
3t*-5t=-15t
3t*1=3t
-4*t^2=-4t^2
-4*-5t=20t
-4*1=-4
3t^2-15t-3t--4t^2-20t--4
Now what? Is this the answer?

Click here to see answer by Alan3354(30993)

Question 559999: find the type and number of solutions for each equation
2x^-16x=-32
3x^2-8x+8=0
Click here to see answer by Alan3354(30993)

Question 560184: Groups of five students must be formed to work on a project. In how many different ways can a group of five be chosen from a class of 12 students?
Click here to see answer by stanbon(57307)

Question 560142: a box is to be constructed from a piece of material of side length x by cutting out 5 inch squares from each corner and turning up the sides. Express volume of box as a polynomial in the variable x
Click here to see answer by josmiceli(9671)

Question 560180: I have a question and I am wondering if someone can please help me.
I am confused about LCM's. I have to find the LCM of 6x^6 and 18x^4 but I am not sure where to begin.
Thanks for all your help
Click here to see answer by stanbon(57307)

Question 560193: 20w^2+w=12
Click here to see answer by mananth(12270)

Question 560194: 20w^2+w-12=0
Click here to see answer by mananth(12270)

Question 560207: Find the LCM of (6+5w),(36-25w^2)(6-5w)
Click here to see answer by stanbon(57307)

Question 560215: Factor completely. Remember to look first for a common factor. If a polynomial is prime, state this.
x^8 − 8x^7 + 16x^6
Click here to see answer by stanbon(57307)

Question 560216: janet can shovel snow in 55 mins. Tom can shovel snow in 40 mins. How long would it take them to shovel snow if they worked together?
Click here to see answer by stanbon(57307)

Question 560432: Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting.
1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by
a. What is the cost to remove 75% of the pollutant?
b. What is the cost to remove 90% of the pollutant?
c. What is the cost to remove 99% of the pollutant?
d. For what value is this equation undefined?
e. Do the answers to sections a. through d. match your expectations? Explain why or why not.

Click here to see answer by stanbon(57307)

Question 560477: 3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.
a. Write an equation using only one variable that could be used to solve for the constant of variation k.
b. A biologist counted 12 white tail deer in a 100-acre parcel of land in a nature preserve. Find the constant of variation k.
c. If the entire nature preserve is 2,500 acres, then what is the total white tail deer population in the preserve? Describe how you arrived at your answer.

Click here to see answer by solver91311(16877)

Question 560499: What is the factored answer for (3x-5)^2-27? I have factored it so many times but can't seem to get the correct answer. The answer should have a binomial and a polynomial in it.
Click here to see answer by stanbon(57307)

Question 560507: Looking for how I solve the following question:
P(x) is a polynomial. If P(x) = -4x^2 +3, then P(x+1) = ?
Click here to see answer by stanbon(57307)

Question 560713: x^2 + 6x - 7 i am suppose to factor for x using area and i am lost.
Click here to see answer by jim_thompson5910(28593)

Question 560802: how do you simplify 42xy/49x?
Click here to see answer by jim_thompson5910(28593)

Question 560802: how do you simplify 42xy/49x?
Click here to see answer by stanbon(57307)

Question 560814: What is 6(m-4) in factored form?

Click here to see answer by rfer(12657)

Question 560814: What is 6(m-4) in factored form?

Click here to see answer by richard1234(5390)

Question 561144: I need help how to find the slope (-19,4) (-10,-11)
Click here to see answer by josmiceli(9671)

Question 561299: Okay my algebra teacher is teaching us polynomials to a factor, the difference of two squares, and perfect square trinomials. And the problem is I don't understand really. The question is 54k^2 - 24. What I have to do first is 54(x^2-12). And that's where I am stuck, I don't know what to do next so please help me.
Click here to see answer by jim_thompson5910(28593)

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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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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