# 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 131292: When 35z^2-23z-72 is factored completely, one of the factors is: a. (7z-9) b. (5z+8) c. (7z+9) d. (5z-9) Click here to see answer by jim_thompson5910(28595)

 Question 131252: . Factor completely: x3 – 2x2 + 6x – 12 Click here to see answer by checkley71(8403)

 Question 131442: 5. Factor completely: 8x^2 + 6x – 5 Click here to see answer by edjones(7569)

 Question 131439: 3. Factor completely: x^2 + 17x + 16 Click here to see answer by edjones(7569)

 Question 131488: factor: 4x(squared)-49y(squared) factor: 4x(squared)-28x+49 simplify the rational expression 1 ___________________ 1 + 1 ___ ____ r x Click here to see answer by 067isa(13)
 Question 131488: factor: 4x(squared)-49y(squared) factor: 4x(squared)-28x+49 simplify the rational expression 1 ___________________ 1 + 1 ___ ____ r x Click here to see answer by Earlsdon(6287)

 Question 131444: Hello, I hope you can help! I've been working a problem for 2 hours, and my text book isn't helping me with making sense of how to break it down and solve it. I do have a teacher's edition, so I have the answer, but I need to know how to get to the answer. (2y-3)^3 The answer is 8y^3-36y^2+54y-27 If possible, I would like a step-by-step instruction of how to work this problem, as well as an explanation of what is happening each step. I hope it is not too much trouble! Thank you for your time! Click here to see answer by checkley71(8403)

 Question 131443: Hello, I hope you can help! I've been working a problem for 2 hours, and my text book isn't helping me with making sense of how to break it down and solve it. I do have a teacher's edition, so I have the answer, but I need to know how to get to the answer. (2y-3)^ The answer is 8y^3-36y^2+54y-27 If possible, I would like a step-by-step instruction of how to work this problem, as well as an explanation of what is happening each step. I hope it is not too much trouble! Thank you for your time! Click here to see answer by checkley71(8403)

 Question 131646: I am not understanding two questions on a teacher generated worksheet. The problems are to Solve the following equations: I am so struggling with this concept. Any help would be greatly appreciated Click here to see answer by stanbon(57377)

 Question 131718: Could you help me with this problem? Find the product: (3ab^3-a^2b^2-2a^3b)5a^3 Click here to see answer by josmiceli(9697)

 Question 131214: when 35z^2-23z-72 is factored completely, one of the factors is: Click here to see answer by scott8148(6628)

 Question 131785: I am sorry but this question does not come from a text book. It is from a handout provide by the teacher. The question is for Algebra 1, my son is a freshman. Here is the Question: For 1990 through 1999, the number of indoor movie screens I and total movie screens T is modeled by: I=161.6t^2 - 20t + 23,326 T=160.3t^2 - 26t + 24,226 where t is the number of years from 1990 inclusive. Find a model for the number of outdoor movies screens D in the US for this time frame. Click here to see answer by edjones(7569)

 Question 131842: Directions: Find a polynomial of minimum degree (there are many) that have the given zeros: 1-sqrt(13), 1+sqrt(13). I understand that if the zeros are: -2,0,2 then the polynomial would work out like this: x(x+2)(x-2)=x(x^2-4)=x^3-4x But the whole square root thing is really throwing me off, if you could help, I would really appreciate it. Thank you for your time. :o) Click here to see answer by solver91311(16897)

 Question 131902: I was doing fine on my homework in till I came to a couple of questions that I could not figure out, if you could help me I would really appreciate it. Here is the problem 6/x^2-4x-5 + 1/x+1 I think that if I could find the LCD for the denominators then I could figure out the rest of the problem. I do know that the answers has to be one of these... A) 7/(x-5)(x+1) B) x+1/x-5 C) x+1 D) 1/x-5 Click here to see answer by solver91311(16897)

 Question 131906: I was doing fine on my homework in till I came to a couple of questions that I could not figure out, if you could help me I would really appreciate it. Here is the problem x+2/2x^2+5x+2 [+] x-3/2x^2-5x-3 I think that if I could find the LCD for the denominators then I could figure out the rest of the problem. I do know that the answers has to be one of these... A) 2/2x+1 B) 1/x+1 C) 1/2 D) 2/(x+2)(x-3) I placed the + in [] just so that you could tell which fraction was which Click here to see answer by solver91311(16897)

 Question 132040: Okay, second time asking for help with this particular question. 2x+1/x^2-16 [+] x^2-6x-7/x^2-11x+28 I placed the + in [] just so you could tell the two fraction apart, it does not mean anything. Click here to see answer by stanbon(57377)
 Question 132040: Okay, second time asking for help with this particular question. 2x+1/x^2-16 [+] x^2-6x-7/x^2-11x+28 I placed the + in [] just so you could tell the two fraction apart, it does not mean anything. Click here to see answer by rapaljer(4667)
 Question 132040: Okay, second time asking for help with this particular question. 2x+1/x^2-16 [+] x^2-6x-7/x^2-11x+28 I placed the + in [] just so you could tell the two fraction apart, it does not mean anything. Click here to see answer by bucky(2189)

 Question 132039: Okay, second time asking for help with this particular question. 2x+6/x^2-9 [+] 1/x+3 I placed the + in [] just so you could tell the two fraction apart, it does not mean anything. Click here to see answer by TakeATuition.com(57)

 Question 131900: I was doing fine on my homework in till I came to a couple of questions that I could not figure out, if you could help me I would really appreciate it. Here is the problem 2x+6/x^2-9 + 1/x+3 I think that if I could find the LCD for the denominators then I could figure out the rest of the problem. I do know that the answers has to be one of these... A) 3/x-3 B) 3(x+1)/(x+3)(x-3) C) 3(x+1)/x(x-3) D) 2/x-3 Click here to see answer by bucky(2189)