# 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 197212: Simplify. Fractions Be sure to state the restrictions on the variables. Multiply: Fractions Click here to see answer by rahman(247)

 Question 197092: I have been working on this math problem and I can't seem to figure it out. I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!! Laws of Logarithms Simplify 4^log base 2(2^ log base 2 of 5) Click here to see answer by jim_thompson5910(28598)

 Question 197090: I have been working on this math problem and I can't figure it out. I was wondering if someone could help me? Please and Thank You!! I would deeply appreciate it!! Laws of Logarithms If f(x)=3^x and g(x)=log base 9 of x, find: f^-1(g(9)) Click here to see answer by stanbon(57387)

 Question 195036: I need to multiply & Divide the following Polynomials: Click here to see answer by rahman(247)

 Question 197366: Perform the indicated operations and simplify. I got as an answer but do not think this is correct. Click here to see answer by jim_thompson5910(28598)

 Question 196807: due to a lack of funding , the number of students enrolled at city college went from 9000 last year to 4000 this year. find the percent decrease in enrollment? Click here to see answer by Mathtut(3670)

 Question 197380: Can you help me simplify by removing a factor of 1. Click here to see answer by solver91311(16897)

 Question 197381: I have a polynomial I have to divide and am stuck: Click here to see answer by solver91311(16897)

 Question 197392: Simplify by removing factors of 1. I am unsure of the answer. The solver on the website says the answer is , however I got the answer . Can you please verify the correct answer for me? Click here to see answer by RAY100(1637)

 Question 197386: I'm trying to find all numbers for which the following radical expression is undefined. If the expression is defined for all real numbers, then I am to state so. I even have the answer to the problem. I just can't figure out how to factor to get to the correct answer: y + 3 over 4y^2 + y - 3 I set the denominator to zero and tried to solve: 4y^2 + y - 3 = 0 (x - 1) = 0 (x + 3) = 0 add 1 to each side subtract 3 from each side x = 1 x = - 3 This is the answer I come up with, but the correct answer is y = -1, y = 3/4. What am I doing wrong? Thanks! Click here to see answer by RAY100(1637)

 Question 197399: In a right triangle, find the length of the side not given. b = 2, c = square root of 13. I got as far as Where do I go from here? Click here to see answer by Earlsdon(6287)

 Question 197424: I have tried everything for this problem and I cannot get the answer. The directions say to expand it. Click here to see answer by Edwin McCravy(8909)

 Question 197437: Using foil method, how would I solve the following equation (x + 3) (X - 4) Click here to see answer by Alan3354(30993)

 Question 197440: using FOIL method How would I solve the following equation (2x + 1) (x + 4) Click here to see answer by jim_thompson5910(28598)

 Question 197472: HeLLo! And if you are helping me.... I truly appreciate it! Im having a hard time with FACTORING!! Im in Math098...i am a freshman in college!! MAth is not my subject and it is very depressing for me... So if you can help me... or answer the questions... I will gladly appreciate it... AGAIN... This is factoring.... I cant make an exponent so instead I will do something like this... EXAMPLE: 2^2 1.) 3-x+xy-3y 2.) 2x^3+8x^2+6x 3.) x^2+4x+5 4.) 8x^2+6x-9 5.) 12x2-x-20 6.) -24x^3-42x^2+45x 7.) 2x^2-x-1 8.) 6x^2+9x+4x+6 9.) 6x^2+x-1 10.)16+16x+3x^2 11.) x^2-22x+121 12.) 9x^2-4z^2 13.) x^2-8x+16 14.) -10x^2+3x+1 Thank you sooo much... please help!! I need this by 5/24/09... Sunday afternoon!! Thanks!! Click here to see answer by stanbon(57387)

 Question 197542: ok I am a bit stuck on what to do here I tried the solvers but it keeps telling me an error of some sort. The only direction I have for this problem is to multiply can some one please help me. Thanks – 4x5(– 3x5 + 2x2 – 4) Click here to see answer by vleith(2825)
 Question 197542: ok I am a bit stuck on what to do here I tried the solvers but it keeps telling me an error of some sort. The only direction I have for this problem is to multiply can some one please help me. Thanks – 4x5(– 3x5 + 2x2 – 4) Click here to see answer by jim_thompson5910(28598)

 Question 197552: 8/11x*2-11x - 7/11x-11 This problem is eight over eleven x squared minus eleven x SUBTRACT seven over eleven x minus elevin Click here to see answer by jim_thompson5910(28598)

 Question 197554: Simplify by removing factors of 1 8w-56/ 7-w Click here to see answer by jim_thompson5910(28598)

 Question 197561: Simplify by removing factors of 1 18x*5 / 21x*3 Click here to see answer by Alan3354(30993)

 Question 197558: Find all numbers for which the rational expression is undefined. 6/x-1 Click here to see answer by stanbon(57387)

 Question 197596: Factor the expression on the left side of each equation. Then solve the equation. x^6+16x^3+64=0 I can find the answer in the back of the book however, i do not understand how they got the answer. The answer is: (x+2)^2 (x^2-2x+4)^2 Click here to see answer by vleith(2825)

 Question 197520: The first one I could not figure out. The last two I tried to figure out. Would someone please help me. Thank you!!! Divison of polynomial (u^5z^8) / (z^-5u^-4)= ? (2)^0 /3 = .33.. 25 1/2 / 10^2 = 1/20 Click here to see answer by ankor@dixie-net.com(15660)