Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

Tutors Answer Your Questions about Polynomials-and-rational-expressions (FREE) Get help from our free tutors ===> Algebra.Com stats: 2031 tutors, 423821 problems solved View all solved problems on Polynomials-and-rational-expressions -- maybe yours has been solved already! Become a registered tutor (FREE) to answer students' questions. If you need immediate math help from PAID TUTORS right now, click here. (paid link) Click here to see problems AND answers on one page Question 26146: how do you factor the polynomial 5x+30y? thanks Holly Click here to see answer by elima(1433)   Question 25948: Using one of the laws of exponents, prove that any number raised to the 0'th power equals 1. Click here to see answer by stanbon(57967)   Question 26234: 2x-2y=18 x=6-2y Click here to see answer by elima(1433)   Question 26313: hi. the directions say to multiply but i need some basic instructions. thank you. Click here to see answer by Alwayscheerful(414)   Question 26313: hi. the directions say to multiply but i need some basic instructions. thank you. Click here to see answer by Earlsdon(6294)   Question 26314: Find the dimensions of a rectangle whose perimeter is 46m ans whose area is 126 m^2. (Hint: Let the width be w. Use the perimeter to find the length in terms of w.) Click here to see answer by Paul(988)   Question 26321: The sum of two numbers is 25 and the sum of their squares is 313. Find the numbers. (Hint let one of the numbers be x . Express the other number in terms of x.) Click here to see answer by Paul(988)   Question 26327: I did this problem and I don't know what I did wrong could someone please help me? Simplify: (f^2 + 4f-1)+(2f^2-3f+2) this is what I did: =(f^2+2f^2)+(4f-3f)+(-1+2) = 2f^2+2 + f-5 = 2f^4+f-5 could you explain what I did wrong? thank you Click here to see answer by Earlsdon(6294)   Question 26337: I have to Evaluate this problem (g-6h)(g+6h) I got =(g)^2-6h^2 = g^2-36h is this correct? Click here to see answer by venugopalramana(3286)   Question 26320: Find the dimensions of a rectangle whose perimeter is 46m ans whose area is 126 m^2. (Hint: Let the width be w. Use the perimeter to find the length in terms of w.) Click here to see answer by stanbon(57967)   Question 26274: 1*10^3/4*10^7 Click here to see answer by longjonsilver(2297)   Question 26358: I did this problem and got it wrong could someone please help? Simplify: x(4x^2+3x-5)-2(4-x^2) = x(4x^2+3x^2-5x-2-2X^2) = 4x^3+(3x^2-2x^2)-5x-2 = 4x^3 + x^2-5x-2 Answer I don't know what I did wrong. Click here to see answer by uknouluvme89(30)   Question 26359: 50x^2=200 Click here to see answer by uknouluvme89(30)   Question 26391: 6-2x/4x-12 Can you please help me simplify this rational expression too? Click here to see answer by uknouluvme89(30)   Question 26393: Evaluate P(-1/2) if P(x) = 2x4 + x3 + 12 I don't really know what this equation is wanting me to do....???? Click here to see answer by uknouluvme89(30)   Question 26392: -(3a^6b^4)^3 huh? lol This is due tomorrow and I'm completely clueless!!! Please HELP! Click here to see answer by uknouluvme89(30)   Question 26397: heres the problem: 4(3x*4x)=18 my teacher gave the problem off the top of his head but i have done the check to it and it does'nt make sense...um can u help ! Click here to see answer by stanbon(57967)   Question 26396: (4)^1/2 + 2 It's asking me to say whether or not it is as real and rational, real and irrational, or complex. Ummm yeah how do I figure that out...she never went over it in class. :( Click here to see answer by stanbon(57967)   Question 26409: 9x-21/15x-35 I am supposed to simplify this rational expression....but how? I need someone to help me ASAP!! please! Click here to see answer by stanbon(57967)   Question 26411: how to simplify 13/104 Click here to see answer by stanbon(57967)   Question 26412: How do I factor the following: 30mn^2 + m^2n - 6n Thanks! Click here to see answer by stanbon(57967)   Question 26414: Is 6+0i and 3i and 1 and 30007.413....which ones are real and rational and which ones are real and irrational and which ones are complex...i just don't understand the difference between them...somebody please help me...I am so freaking confused! Click here to see answer by stanbon(57967)   Question 26201: ab^7 ------- a^4b^9 What steps do you take to solve this problem? Thank You Click here to see answer by stanbon(57967)   Question 26426: what is the way to solve for b^2+5b-24 and how do you do it? Click here to see answer by Earlsdon(6294)   Question 26434: -6x^2+25x-14/-10x^2+39x-14 This needs to be simplified, I just have no idea how to do it....it's due tonight for my online class! HELP! Click here to see answer by Earlsdon(6294)   Question 26435: w^2-18w+81 =0 Click here to see answer by Alwayscheerful(414)   Question 26433: 16x-25/12x^2+5x-25 I need to simplify this equation Click here to see answer by longjonsilver(2297)   Question 26419: c^2 - 10c - 24 I need to factor this equation......ummm how would I go about doing that? Click here to see answer by uknouluvme89(30)   Question 21675: very confused about these two questions solve for x x(x - 5) =4 and (x +2))x-3)(x-6)=0 thanks for your help. Click here to see answer by stanbon(57967)   Question 26499: Please help me figure out how to simplify the following rational expression. 2x^2-7x+3/9-x^2 I have come up with these two ways to start the problem and am not sure which one is correct or where to go from here (2x+ _____ )(x-_____)/(x+3)(x-3) or 2(x+ _____)(x-______) Any help would be great since I am lost at how to do this one. Thank you for your help Click here to see answer by stanbon(57967)   Question 26499: Please help me figure out how to simplify the following rational expression. 2x^2-7x+3/9-x^2 I have come up with these two ways to start the problem and am not sure which one is correct or where to go from here (2x+ _____ )(x-_____)/(x+3)(x-3) or 2(x+ _____)(x-______) Any help would be great since I am lost at how to do this one. Thank you for your help Click here to see answer by queenofit(120)   Question 26502: Please help me solve the following 2x^2-x-3/ 3x^2+7x+4 * 3x^2-11x-20/4x^2-9 Thank you for your help as I am completely lost on how to solve these problems. Click here to see answer by ashben2000(1)   Question 26502: Please help me solve the following 2x^2-x-3/ 3x^2+7x+4 * 3x^2-11x-20/4x^2-9 Thank you for your help as I am completely lost on how to solve these problems. Click here to see answer by stanbon(57967)   Question 26528: I need help factoring this problem 4k^2+20k+25 this is what I came up with (4k+5)(1k+5) what did I do wrong??????? Click here to see answer by stanbon(57967)   Question 26527: could someone help me factor this problem ???? s^2-x-6 Click here to see answer by stanbon(57967)   Question 25874: on my algebra worksheet, we were instructed to factor, I need help with this problem: t^2-6t+9-25s^2 Click here to see answer by stanbon(57967)   Question 26543: I have attempted to solve this problem and am lost since I am not sure if I am doing this right or not. Any help in pointing out my mistakes would be great. Show each step in adding the following rational expression [(9m)/(3m-1) + [3/1-3m)] This is what I have tried 9m+3 / (3m-1) + (1-3m) 9m+3 / (3m-1) + (1 +3m) sign change 9m+3/6m I have no idea if this is right or not. Thank you for your help. Click here to see answer by Earlsdon(6294)   Question 26563: For f(x) = 2x – 11, find f(2) I really cannot comprehend how to do this, can you please explain? Thanks :) Click here to see answer by Earlsdon(6294)   Question 26619: Factor the polynominal completely. 27a^3-8b^3 Click here to see answer by Earlsdon(6294)   Question 26599: this is an extra credit problem that no one in our class can solve: suppose the coeffients of the equation F(x)=ax^3+bx^2+cx+d=0 satisfy the equation a + b + c + d = 0. Name a zero of the equation F(x) thank you in advance for your help. this is due tomorrow, so i would appreciate any help as soon as you can give it. Click here to see answer by venugopalramana(3286)   Question 26661: Factor the Polynominal Completely. 729p^9 - 64 Click here to see answer by Earlsdon(6294)   Question 26716: (x+1)(x+2)(x-1) Click here to see answer by longjonsilver(2297)   Question 26752: 1. Factoring Polynominals: 6x^3+2x^2= 2. 4x^2+12x^3+8x= 3. Factor by grouping: 5m(m-3)-7(m-3)= 4. x^3+2x^3+9x+18 = Click here to see answer by longjonsilver(2297)   Question 26929: I am really stuck on trying to learn this type of equation! Please help me and thank you so much!!! I am not understanding how I must divide these and what even comes first in trying to figure it out. Thank you for all your help!! Click here to see answer by bmauger(101)   Question 27018: perform the indicated operation (2x^2+3)-(6x+4)+(3x^2-x) Click here to see answer by longjonsilver(2297)

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