# 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 404503: please help which of the following binomials is a factor of 2n^2 - 18 n + 3 n^2 + 9 2n + 3 2n^2 + 9 Click here to see answer by mananth(12270)

 Question 404526: solve: (2x/1-x) - (1/x) = 0 please show me step by step. i want to confirm my answer and if wrong i want to know where i went wrong. Click here to see answer by jsmallt9(3296)

 Question 404573: Is this true? √9 + √16 = √9 + 16 Click here to see answer by josmiceli(9678)
 Question 404573: Is this true? √9 + √16 = √9 + 16 Click here to see answer by MathLover1(6632)

 Question 404569: consider the function f(x)=x^2+6x-2. find h, the x-coordinate of the vertex of this parbola. Substitute the two intergers immediately to the left of h and two intergers immediately to the right of h into the function to find the corresponding y values. Fill in the table below, make sure your x-values are in increasing orders in your table. x y there are 5 boxes under each of these. In the 4th box under x is h=____. I have to graph this so any help with that too will be greatly appreciated. Thanks abunch. Click here to see answer by josmiceli(9678)

 Question 404577: Can someone show me how to factor: x^8 - 1 and x^4 + 2x^3 - 3x - 6 (Can this one even be factored?) Thanks in advance for your help. Not sure I ever learned this stuff before but I sure look forward to it. I do have the basics down but really need the steps leading to the answer(s) Thanks again! Mark Click here to see answer by MathLover1(6632)

 Question 404594: Can you show me the steps to solve this problem? (3x^2)(8x^5) Click here to see answer by stanbon(57347)
 Question 404594: Can you show me the steps to solve this problem? (3x^2)(8x^5) Click here to see answer by anomis(18)

 Question 404597: Please help solve: Show all work: The area of a rectangular swimming pool is given by 2x^2+x-10ft^2. One side length of the pool is given by 2x+5 ft. What is an algebric expression for the length of the pool? Simplify and include correct units. Click here to see answer by MathLover1(6632)

 Question 404595: I am really needing help with this problem. I know you have to use long division, but I do not know how do do it. Show work and find the quotient: (6x^3-7x^2-6x-8)/(2x+3) Click here to see answer by ewatrrr(10682)

 Question 404581: preform the indigated solution and simplify 8x/2x+2 + 8/2x+2 Click here to see answer by ewatrrr(10682)

 Question 404586: divide algebraic expression (2x^3-x^2 +3x -1) divided by (x+2) Click here to see answer by ewatrrr(10682)

 Question 404628: how do i simplify this without using zero or negative integers as exponents? {ab^2c^-2}^-3 Click here to see answer by jsmallt9(3296)

 Question 404639: Hi, can you please help me?? 1. I need to solve the following equation: 8x^3+1=0 ---> I tried doing the sum of two cubes, and ended up with x= -1/2, 1/2, and 1/2...can you please tell me if I'm doing it wrong, and show me how to do it correctly? Thank you so much! Click here to see answer by jsmallt9(3296)

 Question 404640: how do i find the product? {x^2-x+5} {4x^2-2x-1} my guess x^2(4x^2) - x(-2x) 5(1) 4x^4-2x-5- Click here to see answer by jsmallt9(3296)

 Question 404637: how do i find the quotient assuming that all variables appearing as exponents represent integers. (this is a division problem set up like a fraction) 16x^5a+1 ________ 4x^a-6 4x^5a^2+1-6 (i think) solved as 4x^5a^2-5 Click here to see answer by jsmallt9(3296)

 Question 404633: how do i evaluate the numerical expression? {(-2)^-1}^-3 first i multiply my exponents and get 3 do i need to put the problem over 1 {1/2}^-3? i don't know how to solve from there either Click here to see answer by jsmallt9(3296)

 Question 404630: how do i find the product? (x-1) (x+3) (x-3) (x^3) - x^2 (3)(3x) = x^3 -2x + 9 ?? (my best guess) Click here to see answer by jsmallt9(3296)

 Question 404615: Hi, can you please help me?? 1. I need to factor this problem first: 2x^2+2x+1 ---> I think it is prime, can you tell if I'm correct, please? 2. I also need to solve the following equation: 8x^3+1=0 ---> I tried doing the sum of two cubes, and ended up with x= -1/2, 1/2, and 1/2...can you please tell me if I'm doing it wrong, and show me how to do it correctly? Thank you so much! Click here to see answer by jsmallt9(3296)

 Question 404771: I am having trouble simplifying this particular problem... a(2b)(3c) I would greatly appreciate your help so that I can understand the steps to take in order to solve it. (: Click here to see answer by rfer(12660)
 Question 404771: I am having trouble simplifying this particular problem... a(2b)(3c) I would greatly appreciate your help so that I can understand the steps to take in order to solve it. (: Click here to see answer by Alan3354(30993)

 Question 404784: How do you sove (4x to the power of 3)to the power of 2? Click here to see answer by IWork4Dessert(60)

 Question 404873: the polynomial 16*x^8+56*x^4*y^7+49*y^14 can be factored into the product of two polynomials, A times B where the coefficient of y in A is greater than or equalto the coefficient of y in B. How do i find A and B? Click here to see answer by Tatiana_Stebko(1326)

 Question 404971: Hi I need to know how to solve this problem,please explain. 2b + 4b(2-b) , my answer is 4b-2b^2+8b-4b^2 I know is wrong now from here I have to subtract,but how that's where I am stuck. Thanks you!!! Click here to see answer by IWork4Dessert(60)

 Question 404962: I need help figuring out this problem. x-3/x+3=2/7 Click here to see answer by Alan3354(30993)

 Question 404943: Find the quotient 25a^2-16b^2÷5a-4b I strugging with this problem. I have no idea of how to solve it. Click here to see answer by MathLover1(6632)

 Question 405104: What is the number needed to resolve this problem, if 3/5 of a certain number is subtracted from a number and the result is 6? My attempt to solve this problem is as follows: Let x = a certain number So, 3/5 - x/1 = 6 The LCD = 5 Multiply both sides by 5x 5*3/5 - 5*x/1 = 5*6 3 - 5 = 30x -2 = 30x x= -15? Click here to see answer by richard1234(5390)

 Question 405062: According to Ohm's law, the current, I, which measured in amperes, in an electrical circuit varies directly with the voltage, V. If the current is 0.64 ampere when the voltage is 24 volts, find the current when the voltage is 48 volts. Click here to see answer by richard1234(5390)

 Question 405114: Are these polynomials and if so what kind? 3/q^2+5 and 1/4y^2+5y-8 Click here to see answer by jim_thompson5910(28595)

 Question 405186: solve and show the answer in interval notation: 3x-4<8 and 4x-1<13 i got: 3x-4<8 +4 +4 3x<12 x<4 4x-1<13 +1 +1 4x<14 x< 7/2 but professor marked it wrong. Please help Click here to see answer by stanbon(57347)

 Question 405059: I have been looking at this question and dont even know where to begin. Solve 4-v/9-v=5/v-9. Can someone help?? Click here to see answer by ankor@dixie-net.com(15652)

 Question 405234: Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x – 15y = -12 3x + 24y = -12 Click here to see answer by stanbon(57347)

 Question 405271: y-(14/y) = 5 i got y^2-14=5y factored (y+7) (y-7)=5y y=0 help! Click here to see answer by jim_thompson5910(28595)
 Question 405271: y-(14/y) = 5 i got y^2-14=5y factored (y+7) (y-7)=5y y=0 help! Click here to see answer by MathLover1(6632)

 Question 405284: Biologists want to set up a station to test alligators in the lake for west nile virus. suppose that the costs are 2500 for setup an 3.00 to administer each test. write an expression that gives the total cost to test x animals Click here to see answer by megan97(1)

 Question 405370: factor each polynomial, if possible. if the polynomial cannot be factored, write prime. 1/4n squared - 9/16r squared Click here to see answer by algebrahouse.com(1079)

 Question 405374: solve each equation. check the solutions. 49m squared-126m+81=0 Click here to see answer by algebrahouse.com(1079)

 Question 405384: factor each polynomial, if possible. if the polynomial cannot be factored, write prime. 4-28r+49r squared Click here to see answer by richard1234(5390)
 Question 405384: factor each polynomial, if possible. if the polynomial cannot be factored, write prime. 4-28r+49r squared Click here to see answer by josmiceli(9678)

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