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

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 Algebra: Polynomials, rational expressions and equations Solvers Lessons Answers archive Quiz In Depth

 Question 328226: Solve the following equation for the variable X 7/x-4+4/x+4=-5x/x^2-16 Thank you! That is all for today =) Click here to see answer by Edwin McCravy(8999)

 Question 328292: Factor completely: 27-8u^3 Can you please show me how to work this problem? Thank you! Click here to see answer by Earlsdon(6294)
 Question 328292: Factor completely: 27-8u^3 Can you please show me how to work this problem? Thank you! Click here to see answer by mananth(12270)

 Question 328277: I need this solved by factoring and I just can't figure it out. Click here to see answer by Fombitz(13828)

 Question 328269: 3a^7+7 - 7+3a^2 _______________________ divide a^2-2a-8 - a^2-2a-8 Click here to see answer by Fombitz(13828)

 Question 328233: A car is traveling on a road that is perpindicular to a railroad track. When the car is 30 meters from the crossing, the car's new collision detector warns the driver that there is a train 50 meters from the car and heading towards the same crossing. How far is the train from the crossing? Click here to see answer by Fombitz(13828)

 Question 328410: Divide and simplify y^2-25/y divided by y+5/y+7 Thank you Click here to see answer by Alan3354(31509)

 Question 328412: Simplify by removing factors of 1 10y^10/35y^6 Thank you Click here to see answer by Alan3354(31509)

 Question 328444: Solve Subtract and simplify if possible d/s+d-d/s-d To me it appears that the solution would be 0 can you show me how to figure this out step by step, Thank you Click here to see answer by solver91311(17072)

 Question 328430: Subtract and simplify if possible d/s+d - d/s-d Would the answer be 0? Can you please show me how to d this step by step? Thank you Click here to see answer by ankor@dixie-net.com(15746)

 Question 328472: Can you please break this down for me & show step by step? I am a visual learner and the book is not helping me on this. Thanks Find the product or quotient. 35a + 280 divide a^2 - 64 __________ __________ 7a - 35 divide a^2-a-20 Click here to see answer by ankor@dixie-net.com(15746)

 Question 328432: Simplify by removing factors of 1 x^2-7x+12/x^2+5x-36 Can you please show me how to do this? Thank you Click here to see answer by Fombitz(13828)

 Question 328431: Solve r/3-3/r=0 the solutions are I think that the solutions are 0,3 or 3,0 but I am not sure which way to put them. Can you explain? Thank you Click here to see answer by Fombitz(13828)

 Question 328442: Can you please show me step by step how to simplify this equation by removing factors of 1? x^2-7x+12/x^2+5x-36 Thank you Click here to see answer by Fombitz(13828)

 Question 328443: SOlve r/3-3/r=0 The solutions are I think either 0,3 or the opposite 3,0 however I am not sure which one so can you please explain? Click here to see answer by Fombitz(13828)

 Question 328550: Tomas can do a job in 4 hours. Julia can do the same job in 6 hours. How many hours will it take the two of them to do the job if they work together? Click here to see answer by solver91311(17072)

 Question 328549: solve: 4 - 1/b < 3/b a. b > 0 b. b<0 or b>1 c. 0 d. b>1 Click here to see answer by checkley77(12569)

 Question 328548: solve: n/n - 4 + n = 12 - 4n/n - 4 a. -4,3 b. -3,4 c. -4 d. 3 Click here to see answer by checkley77(12569)

 Question 328438: The speed of train A is 8mph slower than the speed of train B. Train A travels 230 miles in the same time it takes train B to travel 270 miles. Find the speed of both trains. Thank you Click here to see answer by checkley77(12569)
 Question 328438: The speed of train A is 8mph slower than the speed of train B. Train A travels 230 miles in the same time it takes train B to travel 270 miles. Find the speed of both trains. Thank you Click here to see answer by josmiceli(9817)

 Question 328436: The speed of train A is 8mph slower than the speed of train B. Train A travels 230 miles in the same time it takes train B to travel 270 miles. Find the speed of both trains. Thank you Click here to see answer by checkley77(12569)

 Question 328602: how can you determine if a polynormial is the difference of two squares? can you give an example of this problem Click here to see answer by stanbon(57953)

 Question 328659: How would you apply a factoring formula to completely factor the expression x3 + 3x2 – x - 3 Click here to see answer by rapaljer(4667)

 Question 328707: Could I please get help with this problem. I have tried different ways to solve it and can not get it to come out. In the book it shows to use -1 in front. -1(30w²+w+1. Don't really understand.Do I need to change signs before factoring? Factor completely and check. Thank you for your time. -30w² + w + 1 Click here to see answer by rapaljer(4667)
 Question 328707: Could I please get help with this problem. I have tried different ways to solve it and can not get it to come out. In the book it shows to use -1 in front. -1(30w²+w+1. Don't really understand.Do I need to change signs before factoring? Factor completely and check. Thank you for your time. -30w² + w + 1 Click here to see answer by Theo(3504)