# 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 32627: hey,can you help me solve this polynomial using factoring.... i have tried numerous times and it doesnt work out right..... 6Xsquared+2XY+Ysquared+3XY Click here to see answer by josmiceli(9686)

 Question 32628: hey once again i tried this problem a few times and the answer doesnt match what the teacher gave me as the answer..... factor perfect-square trinomials and differences of squares..... X^2Y-4Y+X^2-4 =y(x^2-4)+(x^2-4) =(x^2-4)(y+1) =(x-2)(x+2)(y+1) Cheers Click here to see answer by stanbon(57361)

 Question 32629: factor perfect-square trinomials and differences of squares..... 6Xsquared+2XY+Ysquared+3XY Click here to see answer by checkley71(8403)

 Question 32727: Solve the problem Mark and Rachel both work for Smith Landscaping Company. Mark can finish a planting job in 2 hours, while it takes Rachel 4 hours to finish the same job. If mark abd Rachel will work together on the job, and the cost of labor is \$45 per housr, what should the labor estimate be? Click here to see answer by mukhopadhyay(490)

 Question 32694: Find the LCD r-1 ______ r^2+6r+5 , 2 ___ r^2+r Click here to see answer by benni1013(197)

 Question 32691: 4y ____ * multiplyed by 8y+4 12y+6 _____ 7 Click here to see answer by benni1013(197)

 Question 32689: 5-m ____ m-5 I put -1 is this correct??? Click here to see answer by benni1013(197)

 Question 32802: ((x^2-6x+8)/(x^2-2x))/(3x-12) How do you know when to simplify and divide the polynomials, and when to do long division? And the, which do you do first, the sipmlifying or the dividing? Truthfully I think i need help with the over all Algebra subject, because i'm doing so well in that class. Thank you, J.A. Click here to see answer by askmemath(368)

 Question 32771: By considering factors, find the smallest value of x such that 120x will be a perfect square. Click here to see answer by lolalove(1)

 Question 32828: Find the Lowest common demonator or the LCD????? r-1 2 _____ , _______ r^2+6r+5 r^2+r Click here to see answer by stanbon(57361)

 Question 30910: I need an explanation on how to properly factor this polynomial... 4a^2+12ab+9b^2-25c^2 I have tried grouping and didnt reach the solution. Thanks in advance for the help! Click here to see answer by stanbon(57361)

 Question 32799: How does the problem (3x to the fourth power y to the third power)(4x to the fourth power y) work. Click here to see answer by longjonsilver(2297)

 Question 32876: How do you factor the expression 7n^5 + 7n^4 - 3n^2 - 6n - 3? Click here to see answer by sarah_adam(201)

 Question 32888: Ima Skeepro want to store her skis and winter supplies in a closet. The closet is 0.6 deep, 1.5 wide and 2.4m tall. ima wants to cover the left right and back side of closet with wallpaper. if wall paper sells for \$4.50 per square meter how much will it cost?explain your answer Click here to see answer by checkley71(8403)

 Question 32797: 12x^3y^2z - 24x^2y^3z + 16x^2y^3z^3 Factor the polynomial Click here to see answer by ikdeep(226)

 Question 32915: I worked the following problem and came up with -216a^2. Simplify: (-2a^4)^3(3a^-5)^2 I worked the following problem and came up with 3(a^2-5a^2-14). Factor: 3a^2-15a^2-42 Click here to see answer by josmiceli(9686)

 Question 32925: Solve the problem. Jan can run 5 miles per hour on level ground on a still day. One windy day, he runs 10 miles with the wind, and in the same amount of time runs 6 miles against the wind. What is the rate of the wind? Click here to see answer by checkley71(8403)

 Question 32965: ima skeepro wants to store her skies and winter supplies in a closet. the closet is 0.6 m deep, 1.5 m wide and 2.4 m tall. ima's skis are 2.8 meters long. can these skies fit in the closet? explain your reasoning Click here to see answer by stanbon(57361)

 Question 32923: Solve the Problem... Five divided by the difference of a number and 7 equals the quotient of 10 and the sum of the number and 6. Find the number. Click here to see answer by xcentaur(357)

 Question 33091: Hello, sorry to be a bother!!! But I need help a usual!! Here are my problems!! 1. Simplify the rational expression: x^2-3x-10 _________ x^2-x-20 2. Divide: 2x^2+5x-12 / 2x^2-7x+6 _______________________ 9x^2-16 / 3x^2-x-4 3. Simplify: square root[144x^10y^12z^18] 4. Perform the indicated operations: square root[50]+2 square root[32]- 2 square root[8] 5. Multiply: (5 square root[2]+3)(square root[2]-2 square root[3]) 6. Rationalize the denominator: 2 ______________ square root[6]- square root[5] I spelled out the square root because there is nothing on key board for symbol of the square root check. I will appreciate any help that I can get. Thanks!!! Click here to see answer by sarah_adam(201)

 Question 33135: I can not for the life of me remember how to do this. I have tried numerous ways and still have not come to the correct answer. 2x to the 4-3x to the 3+x+1 is divided by 2x to the 2+x+1 Click here to see answer by mukhopadhyay(490)