# 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 73041: solve x squared + 2x-8=-4 and x squared+2x-10=0 Click here to see answer by jim_thompson5910(28715)

 Question 73059: How do you factor r5k2*-27k-7 ? *the 2 is an exponent Click here to see answer by stanbon(57967)

 Question 73065: Can someone please assist me with the below problems. Thank you. Christine 1) Factor the polynomial into two polynomials of lesser degrees given one of its factors: Polynomial: 2x^3 +x^2 - 2x -1; Factor: x + 1 This is how I attempted to solve: 1 | 2 1 -2 -1 _____________ 2 3 1 0 Solution: (2x^2 + 3x - 1)(x + 1) Please help!!!!!!! Click here to see answer by jim_thompson5910(28715)

 Question 73067: 4) Perform the division: 4x^4 - x^3 - 7x^2 + 18x divided by x - 2 The solution I got was: 4x^3 + 7x^2 + 7x + 4 + 8/x - 2 Is this correct? Thank you Christine Click here to see answer by jim_thompson5910(28715)

 Question 73066: Perform the division: x^6 + 4x^5 - 3x^2 + 5x divided by x^3 + x^2 - 4x + 3 I have no idea where to begin. Can someone please help!!! Thank you Christine Click here to see answer by jim_thompson5910(28715)

 Question 73075: Adding and subtracting unlike rational expressions. HELP!! I have read and re-read the examples and directions and still can't figure out how to do this. Thank you. subtraction.. 2 over 5w-10 minus 3 over 2w-4 Click here to see answer by stanbon(57967)

 Question 73040: for the function y = 1/x-1 give the y values for x = -2, -1, 0, 1, 2, 3 show work in this space Click here to see answer by rmromero(383)

 Question 73115: divide... 20x^2 + 43x + 22/4x + 7 Click here to see answer by jim_thompson5910(28715)

 Question 73325: Factor by grouping. To write exponents, you may indicate exponents with the ^ symbol located above the number 6 on your keyboard. For example, x4 would be written x^4. 3x + 3y + ax + ay 5(x+y) + 9(x+y) 8x3 - 12x2 + 6x - 9 x3 + x2 + 2x + 2 2x3 - 8x2 - 9x + 36 Click here to see answer by checkley75(3666)

 Question 73355: Can you help me factor by grouping the following? x^3 + 3x^2 + 4x +12 I think the answer is: x (x^2 + 3x +4) + 12. Am I on the right track? Thank you for your assistance. Click here to see answer by ankor@dixie-net.com(15746)

 Question 73397: 12% of what number is 360? 43.75 is what percent of 125? Click here to see answer by jim_thompson5910(28715)

 Question 73374: I have learned how to completely factor polynomials such as: x^2+7x-30 (x+10)(x-3) but I get lost when there are variables instead of number. I need to find all the positive values for "k" in this problem: x^2+x-k Click here to see answer by psbhowmick(529)

 Question 73492: Find each product (y-3)(yt5)=y(y) t y(3) ty(y) ty(5)=y2 t y-3 t y2 t y5= y4 t y2 did I do this problem correctly? Click here to see answer by jim_thompson5910(28715)

 Question 73495: Perform each division by simplifying each fraction. Write all answers without using negative or zero exponents. a2b/6yz2=-3yz/6 Did I do the problem right. If I didn't please explain what I did wrong. Thnaks/ Click here to see answer by jim_thompson5910(28715)

 Question 73491: I have already worked this problem, but think I got confused and mixed up a couple of steps. Could you please provide me with the proper steps so I can evaluate my original work and see what I did wrong. Simplify and evaluate: (2x^-6y^-4z^0/3^-2x^-2y^-8z^5)^3 Click here to see answer by Earlsdon(6294)
 Question 73491: I have already worked this problem, but think I got confused and mixed up a couple of steps. Could you please provide me with the proper steps so I can evaluate my original work and see what I did wrong. Simplify and evaluate: (2x^-6y^-4z^0/3^-2x^-2y^-8z^5)^3 Click here to see answer by jim_thompson5910(28715)

 Question 73547: Factor completely: x^7y^2 - 4x^5y^2 - 21x^3y^2 I am having a difficult time factoring this trinominal. Think I am getting confused by all the x's and y's. Could you please help me, so I can work these types of problems correctly? Click here to see answer by bucky(2189)

 Question 73574: I need help in solving equations by factoring: 2t^2+7t=4. THANK YOU Click here to see answer by stanbon(57967)

 Question 73582: I need help in solving equations by factoring: 2t^2+7t=4. THANK YOU Click here to see answer by stanbon(57967)

 Question 73615: when dividing 12x*2-7x+18/ -4x does it make a difference in the way you work the problem because it has a negative 4? I understand how to divide it without the number being a negative. Thanks Click here to see answer by ptaylor(2052)

 Question 73625: Can you help me factor 3x*3=81? I have no idea how to even begin. Thank you Click here to see answer by stanbon(57967)

 Question 73740: The area of the triangle is 100a^3b square units. Find the height of the triangle. The length is 20a^2 Click here to see answer by jim_thompson5910(28715)

 Question 73741: i need to the steps to these problems, like really step step, i really dont understand, please and thanku Click here to see answer by jim_thompson5910(28715)

 Question 73749: I really don't think that there is a possible answer. what are the factors for -180 for this question? is this a prime polynomial? Click here to see answer by checkley75(3666)

 Question 73226: Why is 3x squared a mononoial and 3x to the negative second power not a monomial? Click here to see answer by jim_thompson5910(28715)

 Question 73851: how do you find the sum of (-x^2+x+2)+(3x^2+4x+5) Click here to see answer by stanbon(57967)
 Question 73851: how do you find the sum of (-x^2+x+2)+(3x^2+4x+5) Click here to see answer by Edwin McCravy(8999)

 Question 73853: I need to subtract unlike rational expressions. 2 over 5w+10 minus 3 over 2w-4 Click here to see answer by stanbon(57967)

 Question 73848: ```Please solve or simplify fraction twelve over c to the neg 8 X d squared ``` Click here to see answer by Edwin McCravy(8999)

 Question 73724: I dont understand rational expression with extraneous values. Click here to see answer by stanbon(57967)