# 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 209573: I have three that I need help on. 1.(4x^2+2xy-3y^2)+(-2x^2+5xy-2^2) 2.(5r^3-6rs+3s^2)-(-5r^3-3rs+4s^2) 3.(3a^4+2ab+6b^2)+(-7a^4-8ab-9b^2) Click here to see answer by checkley77(12569)

 Question 209684: Can someone help me with this problem please? Build each rational expression into an equivalent rational expression with the indicated denominator -7yt/3x = ?/18xyt Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator 4/x - y, 5x/2y - 2x Click here to see answer by stanbon(57967)

 Question 209557: factor: 2x^5 + x^4 - 8x^3 - 4x^2 Click here to see answer by MathTherapy(1483)

 Question 209692: Can I please get some help with these problems? Perform indicated operation reduce to the lowest term 4/9 - 1/9 a + 7/a - 4 + 9 - 5a/a - 4 3/x + 1 + 2/x - 1 2/x -3 + 3/3 - x Click here to see answer by stanbon(57967)

 Question 209794: how do I factor 4^2 - 25 completely Click here to see answer by nyc_function(2733)

 Question 209730: Here is one word problem: You commute 56 miles one way to work.The trip to work takes 10 minutes longer than the trip home. Your average speed on the trip home is 8 miles per hour faster. What is your average speed on the trip home? Thanks a tone! Jenn Click here to see answer by ankor@dixie-net.com(15746)

 Question 210087: how do i simplifi this rational exp x over x^2-3x-10 plus 2 over x^2-3x-10 Click here to see answer by jim_thompson5910(28715)

 Question 210088: how do I simplifi this rational exp 3y-5 over 2y^2+9y-5 plus y-4 over 2y^2+9y-5 Click here to see answer by Earlsdon(6294)
 Question 210088: how do I simplifi this rational exp 3y-5 over 2y^2+9y-5 plus y-4 over 2y^2+9y-5 Click here to see answer by jim_thompson5910(28715)

 Question 210086: how do I simplifi this rational exp 2 over x+3 plus 7 over x+3 Click here to see answer by jim_thompson5910(28715)
 Question 210086: how do I simplifi this rational exp 2 over x+3 plus 7 over x+3 Click here to see answer by Earlsdon(6294)

 Question 210084: how do I simplify this rational exp 4x over 3x+2 plus 6x over 3x+2 Click here to see answer by tutor_paul(490)

 Question 210147: How do I solve? I keep on getting x=4, but it doesn't check out. Click here to see answer by jim_thompson5910(28715)

 Question 210143: how do I simplify this rational exp? 2 over x^2 + 7 over x^2 Click here to see answer by jim_thompson5910(28715)

 Question 210140: determine if the expression 4m^5 - 6m^8 + m + 3 is a polynomial in one variable. if so,state the degree. Click here to see answer by jim_thompson5910(28715)

 Question 210085: how do i simplify this rational exp 2 over x^2 plus 5 over x^2 Click here to see answer by checkley77(12569)

 Question 210236: I need help!!! Lol. 2a(x+3)-3a(x-3) Can you please show me how to do this? Click here to see answer by jim_thompson5910(28715)

 Question 210317: I just want to check and see if I have a right answer? Thank you! Solve rational equations from textbook 1.Solve x-5/x+3=1/6 6(x-5)=1(x+3) 6x-30=1x+3 5x=33 x=33/5 2.Solve x-2/x+2=5/7 7(x-2)=5(x+2) 7x-14=5x+10 2x=24 24/2 x=12 Click here to see answer by stanbon(57967)
 Question 210317: I just want to check and see if I have a right answer? Thank you! Solve rational equations from textbook 1.Solve x-5/x+3=1/6 6(x-5)=1(x+3) 6x-30=1x+3 5x=33 x=33/5 2.Solve x-2/x+2=5/7 7(x-2)=5(x+2) 7x-14=5x+10 2x=24 24/2 x=12 Click here to see answer by jim_thompson5910(28715)

 Question 210144: How do I simplify this rational prob x-6 over 3x+5 subtract 5x-4 over 3x+5 Click here to see answer by Earlsdon(6294)

 Question 210079: I need help in this rational expression (x^2+2x) divide (x+2) (x^2-4) (x-2) Click here to see answer by HyperBrain(694)

 Question 210367: (2x-1)(3x^2-9x+6) 7x^3-14x^2+21x 7x 4x^3-15x2-190x+9 x-9 The last two problems is over the single number hopefully you understand Click here to see answer by stanbon(57967)

 Question 210366: Hi I have three problem that I have to perform operation on and show my work. -5x(3x^2-4x-9) (5-3x)(4+7x) (3x+5)^2 Click here to see answer by vleith(2825)

 Question 210131: find all values of x such that y=0. y=1/5x+5 - 3/x+1 +7/5 Click here to see answer by ankor@dixie-net.com(15746)

 Question 210476: in need of help with rational exp 6x-9 over 12x+6 times 36x+18 over 24x-36 Click here to see answer by checkley77(12569)

 Question 209736: Please show work on how to solve this problem. If you could do 19-68 odd. That would help me a lot. Thank you. Click here to see answer by Alan3354(31532)

 Question 210668: Factor the polynomial expression: 4x2 + 16x + 15 Click here to see answer by tutor_paul(490)

 Question 210752: Hey guys i know i am suppose to submit one at a time internet has been having issues so that is why i did this one with two problems in it. Storms are suppose to move in. -------------------------------------------------------------------------------- Factor each polynomial. You may use the grouping number method or the trail and error method. 30. 5x^2 - 8x - 4 -------------------------------------------------------------------------------- Factor each polynomial. 48. 12x^2 - 5x - 3 Click here to see answer by tutor_paul(490)

 Question 210751: Divide Using synthetic division. 16. (3x^4 + 8x - 10)/ (x+2) Click here to see answer by stanbon(57967)

 Question 210949: Simplify a - {5b - [a - (3b - 2c) + c - (a - 2b - c)]}. Click here to see answer by DRichardson(63)

 Question 210699: how is this rational prob done 3n over 2n+9 subtracted by 6n-5 over 2n+9 Click here to see answer by ankor@dixie-net.com(15746)

 Question 210990: A red ball and a green ball are simultaneously tossed in the air. The red ball is given an initial velocity of 96 feet per second, and its height t seconds afger it is tossed is -16t^2 + 96t feet. The green ball is given an initial velocity of 80 feet per second, and its height t seconds after it is tossed is -16t + 80t feet. a) find a polynomial D(t) that represents the difference in the hieghts of the two balls. b) how much higher is the red ball 2 seconds after the balls are tossed? c) when does the difference in the heights stop increasing? Click here to see answer by ankor@dixie-net.com(15746)

 Question 210692: how is this rational exp done? x^2-x-6 over x^2+2x+1 divided by x+2 over x+1 Click here to see answer by ankor@dixie-net.com(15746)

 Question 211004: Determine the values or the values of the variable where the expression is defined. (x – 4) / (x^2 – x – 12) Click here to see answer by ichudov(499)

 Question 211014: In need of help with rational prob? 4 over x+2 = 3 over x+1 Click here to see answer by Earlsdon(6294)

 Question 211012: how is this rational prob done? 4 over 4x-1 = -2 over 1-3x Click here to see answer by Earlsdon(6294)

 Question 211011: how is this rational prob done? 2x over 3x-4 = x-3 over x Click here to see answer by Earlsdon(6294)