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

Algebra ->  Algebra  -> Polynomials-and-rational-expressions -> Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

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

 Question 297303: Can someone help me figure out if the polynomial below is a monomial, trinomial or a bionomial or none of these. I just do not understand how to determine this and any explanation would greatly be appreciated. Thank you. -19s^7-4s-8 Click here to see answer by richwmiller(9135)

 Question 297307: Can someone solve this problem and explain it to me. Thank you. Multiply (4+4x^3)^2 I worked it out and came up with the answer of 16x^6 +32x^3 +16. I am not sure if it is right. Click here to see answer by richwmiller(9135)

 Question 297335: Can someone solve this problem and explain the steps to me. Thanks so much. (3x^2-2x-13) divided by (x-2) Click here to see answer by Fombitz(13828)

 Question 297383: It takes a boy 90 minutes to mow his parents lawn, but his brother can do it in 60 minutes. how long would it take them to mow the lawn if they worked together using two lawnmowers? Click here to see answer by richwmiller(9135)

 Question 297313: how do i solve the problem of negative 4 x 2 to the second power Click here to see answer by checkley77(12569)

 Question 297405: what are the steps to factoring this problem 3(x)2+8x+5 Click here to see answer by richwmiller(9135)

 Question 297409: Factor the following polynomial completely 8x^6 + 64y^3 i know its a difference of two cubes. i am just having problem getting it started. The 8 is throwing me off i know it show come out a binomial and a trinomial but would it be ((4x^2)X^3+8y) Click here to see answer by richwmiller(9135)

 Question 297418: A number minus twice its reciprocal is the same as the reciprocal of four times the number. find the number. I have the equation as x-2 1/x = 1/4x then i multiplied 2 by 1/x and got 2/x Then i changed the x/1-2/x into the same base so we can subtract and got (x^2-2)/x + 1/4x From there i am lost. Click here to see answer by josmiceli(9645)

 Question 297564: By what should both sides of the equation be multiplied to clear it of fractions? x/5 = 3x/10 + 7/2x Thank you! Click here to see answer by richwmiller(9135)

 Question 297574: How do you solve: 7/x-3 + 1/x-3 = x-5 Thank you! Click here to see answer by stanbon(57214)

 Question 297494: how do you know if it is rational or irrational when solving a equation? Click here to see answer by richwmiller(9135)

 Question 297581: How do you solve for R? Thank you! Click here to see answer by Deina(147)

 Question 297651: Can someone please solve and explain the steps used in solving it? I am at a loss and have no clue as to how go about solving it. Please, please. help. The polynomial 0.041h - 0.018A - 2.69 can be used to estimate the lung capacity in liters, of a female with the height h cm and age A years. Find the lung capacity of a 30 year old woman who is 180 cm tall. Round to the nearest liter. Click here to see answer by richwmiller(9135)

 Question 297654: Can someone help me evaluate and explain the following? Thank you I really need and appreciate your help. Evaluate yz + xy -z for x=2, y=4 and z=1 Click here to see answer by richwmiller(9135)

 Question 297664: I need to factor the polynomial completely. 3x^3+12x^2-2x-8 Thanks Click here to see answer by richwmiller(9135)

 Question 297672: Give an equation of the variation described. Use k for the constant of variation. 1. V varies directly as the cube of r. Please help, neither me nor my parents understand this. Click here to see answer by richwmiller(9135)

 Question 297650: Evaluate P(-1/2) if P(x) = 2x^4 + x^3 + 12 Click here to see answer by Fombitz(13828)

 Question 297760: I need help with the following problem. I worked it out and got the wrong answer. multiply (15n-2) (2n^3 - 3n^2-4n-5) My answer was 30n^4 -49n^3 -54n^2 -67n + 10 The follow are the choices the answer could be according to my teacher. 10n4 - 19n3 - 14n2 - 17n + 10 10n4 - 19n3 - 26n2 - 33n - 7 10n4 - 15n3 - 20n2 - 25n + 10 4n3 - 6n2 + 8n + 10 I am not sure so any help with letting me know which is correct would be appreciated. Thank you Click here to see answer by user_dude2008(1861)
 Question 297760: I need help with the following problem. I worked it out and got the wrong answer. multiply (15n-2) (2n^3 - 3n^2-4n-5) My answer was 30n^4 -49n^3 -54n^2 -67n + 10 The follow are the choices the answer could be according to my teacher. 10n4 - 19n3 - 14n2 - 17n + 10 10n4 - 19n3 - 26n2 - 33n - 7 10n4 - 15n3 - 20n2 - 25n + 10 4n3 - 6n2 + 8n + 10 I am not sure so any help with letting me know which is correct would be appreciated. Thank you Click here to see answer by stanbon(57214)
 Question 297760: I need help with the following problem. I worked it out and got the wrong answer. multiply (15n-2) (2n^3 - 3n^2-4n-5) My answer was 30n^4 -49n^3 -54n^2 -67n + 10 The follow are the choices the answer could be according to my teacher. 10n4 - 19n3 - 14n2 - 17n + 10 10n4 - 19n3 - 26n2 - 33n - 7 10n4 - 15n3 - 20n2 - 25n + 10 4n3 - 6n2 + 8n + 10 I am not sure so any help with letting me know which is correct would be appreciated. Thank you Click here to see answer by richwmiller(9135)

 Question 297775: find the least common multiple of the two expressions wx and 6t^9 w^8 x^4 Click here to see answer by user_dude2008(1861)
 Question 297775: find the least common multiple of the two expressions wx and 6t^9 w^8 x^4 Click here to see answer by stanbon(57214)

 Question 297781: find the difference of 2 squares x^2-1 = Click here to see answer by user_dude2008(1861)

 Question 297806: Solve using the principle of zero products. s(s+4)=0 Click here to see answer by JBarnum(2044)