# 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 22771: what is the least common denominator? 1/ab^2 and a/5 Click here to see answer by queenofit(120)

 Question 22817: how would I simplify this so i can do the remainder of my homework (2x^4 + 5x^3 + 4) + (3x^3 - 2x + 5) I think I combine like terms somehow. thanks Click here to see answer by queenofit(120)

 Question 22646: Fully factor the third-order polynomial H(s) if it is known that one of the factors is (s+2). H(s)= 2s^3-7s^2-43s-42 I need help.... Click here to see answer by venugopalramana(3286)

 Question 22609: how do i factor by using the trial and error method for this problem? Help 15x^2+13x+2 Click here to see answer by venugopalramana(3286)

 Question 22872: Help!!!! Completely factor the polynomial X^3+2X^2-120X. Thanks very much Click here to see answer by Earlsdon(6294)

 Question 22932: 56 x to the third power plus 64 x to the second power take away 20 x divided 8 x to the second power take away 2 x take away 15 times 2 x to the second power plus 5 x take away 21 divided 63 x to the third power plus 129 x to the second power take away 42 Click here to see answer by rapaljer(4667)

 Question 22923: What is a shortcut of finding a trinomial squared...For Example like: (x^2-3x+5)^2 Click here to see answer by rapaljer(4667)

 Question 22955: Solve by factoring--4xcubed - 28xsquared + 49x > 0 Click here to see answer by longjonsilver(2297)

 Question 22996: I REALLY need help for the following problem. 1.5m^6(-2m^2)^4. The solution to this is hidden in a multiple choice problem and none of the answers I've calculated ad up to the possible answers I need to pick from. Help would be appreciated and thank you in advance! Click here to see answer by rapaljer(4667)
 Question 22996: I REALLY need help for the following problem. 1.5m^6(-2m^2)^4. The solution to this is hidden in a multiple choice problem and none of the answers I've calculated ad up to the possible answers I need to pick from. Help would be appreciated and thank you in advance! Click here to see answer by AnlytcPhil(1278)

 Question 23015: Please help. I need to factor the following: 6x^5 + 4x^3 - 8x. I got as far as 2x(3x^4 + 2x^2 - 4). I'm not sure this is right. Is this problem a prime polynomial? Thanks. Click here to see answer by rapaljer(4667)

 Question 23009: I need help because i am doing this w/o my book. Please and thank you. the question says Find the zero's of the polynomial function. f(x)=2(x-5)(x-6)^3 I have two more questions and that is it.The next one says use the correct compound interest formula A=P[1+r/n]^nt or A=Pe^rt to solve I don't know what they mean can u tell me please. Using that it says Find the accumulated value of an investment of \$10,000 at 4% compounded annually for 17yrs. Click here to see answer by rapaljer(4667)

 Question 23042: Two ships leave port, one sailing east and the other sailing south. Some time later they are 17 mi apart, with the eastbound ship 7 mi farther from port than the souhbound ship. How far is each from port. This is what i tried: n squared + (n+2)squared=17 squared Click here to see answer by rapaljer(4667)

 Question 22374: This is factoring polynomials. How do i factor 9x^2+24xy-9y^2 I haven't a clue. Can someone help me with this? Click here to see answer by venugopalramana(3286)

 Question 22375: I am to factor 3y^2+10y+7, the trinomial using the ac method. Can someone help me answer this question. Click here to see answer by AnlytcPhil(1278)

 Question 22130: Graph the polynomial function. f(x)=-3x(x+2)to the second power Click here to see answer by rapaljer(4667)

 Question 21803: Hi--can anyone tell me if i did this right? (t^-8)^2/(t^-5)^9 i got: 1/t^29 Thanks in advance for you hlep. Click here to see answer by rapaljer(4667)

 Question 21802: Hello, Can anyone tell me if this is correct? The floor plan of a house is rectangular. The house's width is x-5 yards and it's length is 2x + 2 yards. Write a binomial that represents the perimeter of the house. I came up with : 2(2x+2)+ 2(x-5) 4x+4+2x-10 6x-6 Thanks for your help! Click here to see answer by rapaljer(4667)

 Question 21815: Need assistance please with applications using rational equatins and proportions. thanks for your help Find all numbers for which the rational expression is not defined. 3/x 4/x-6 x+5/x^2-36 x2-3x+2/x^2+x-30 Click here to see answer by rapaljer(4667)

 Question 22057: hello, simplify (x^-6 . x^-4)=^2 I came up with the answer (x^-6 + 4 )^2 is this correct? if not could you show me the correct answer. thanks Click here to see answer by rapaljer(4667)

 Question 21687: i am told to simplify this (-3x^2y)^3= but i don't think it's possible. is this a trick question? thanks Click here to see answer by rapaljer(4667)