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 49596: solve by completing the square(DO NOT FACTOR): x^2-4x-12 Click here to see answer by Earlsdon(6294)

 Question 49706: OK now this algebra problem gave me the answer which is -94. Unless i copied it down wrong? well i have tried solving the problem and i don't get any where near that number. This is the equation.... 1/2x-37=-8x The first thing i did was times 1/2x by -1/2x and did the same thing to -8x and so on. but like i said i don't get any where near -94. Click here to see answer by checkley71(8403)

 Question 49772: Factor completely 10x^4 - 11x^3 + 23x^2 + 23x - 21 Click here to see answer by stanbon(57977)

 Question 49860: I would like to know how to factor a polynomial completely. Example: 2 a - 4a - 12 (a -6)(a +2) How do you determine that is is 6 and 12 and how do you verify the correct answer. Thank you. Click here to see answer by Earlsdon(6294)

 Question 49900: I am not really sure how to do this. What am I supppose to simplify? Is there a certain way how to do these? Simplify: a. 64^2/3 b. (-8 )^-4/3 Click here to see answer by Earlsdon(6294)

 Question 49901: I am confused, can I get some help with these please? Solve each irrational equation. If an equation has no solution, so state: a. 3/x - 1/6 = 1/x b. 13/y-1 - 3 = 1/y-1 Click here to see answer by Nate(3500)

 Question 49933: write each expression in the form quotient + remainder divisor 2x^2 + 4 over 2x Click here to see answer by stanbon(57977)

 Question 49938: How do I solve this problem? t(4t-7)=0 When you are solving for t? Click here to see answer by stanbon(57977)

 Question 49936: 14y + 8y^2 + y^3 + 12 divided by 6 + y. Find the quotient Click here to see answer by stanbon(57977)

 Question 50147: Help. -15j + 19 - j = -1 help steps to solve and check. Click here to see answer by Nate(3500)

 Question 50200: Solve the following equation by clearing denominators and decimals first: -2.3-4.2r=37.58 Click here to see answer by AnlytcPhil(1278)

 Question 50241: How do you solve 3x^3-30x-15x^2? Could you please show and explain each step? Thank you so much. Click here to see answer by stanbon(57977)

 Question 50239: How do you factor 3x^2-10xy+8y^2? I would like you to show each step and explain why you're doing each step. Thank you so much. Click here to see answer by stanbon(57977)

 Question 50240: How do you solve 2x^3+6X^3-8x-24? Please show each step and explain why you're doing each step. Thank you so much. Click here to see answer by yevon(1)

 Question 50199: I need help to solve this & check it. 11x + x + 6 = -18 + 6 thank you. Click here to see answer by tutorcecilia(2152)

 Question 50448: How do you factor out the common factor of (x-1)^2+6(x-1)? Click here to see answer by AnlytcPhil(1278)

 Question 50413: The volume of a solid is given by the formula V=2/3pi r^2(2h-r). Solve the equation for h in terms of r and V. Write your answer as a single simple factor. Click here to see answer by stanbon(57977)

 Question 50501: I would greatly appreciate some help with factoring. I understand that is basically means to divide, but when the book says simplify this: 5x + 2y/ 35x + 14y, it does not make sense to me in the examples in the book because I come up with something far different than the check figures in the back of the book. Here is what I have done so far: 1x + 1y / 7x + 7y. I also tried it this way:-1(5x +2y)/(35x +14y) = x+y/7x +7y. But it seems like there should be more to it than that. Click here to see answer by Nate(3500)

 Question 50408: how do I simplify a question that looks like: ((8x^3)/(x-1))/((7x^2)/((x^3)-1)) so that it is in x^3+x^2+x form? Click here to see answer by stanbon(57977)

 Question 50544: "Factor the following polynomials without a calculator. No decimal answers. Exact answers only in completely reduced form. Show all work for credit. Circle final answer." Jeez, how much more specific can they get?! How do you do this? Click here to see answer by Nate(3500)

 Question 50560: How do you solve x^4-10x+25=0 for x? Please use factoring and show and explain each step. Thank you so much. Click here to see answer by tutorcecilia(2152)

 Question 50573: how do you solve for Y in 2x+y=7 Click here to see answer by AnlytcPhil(1278)

 Question 50552: How do you factor 3x^3-30x-15x^2? Could you please show and explain each step? Thank you so much. Click here to see answer by Nate(3500)

 Question 50668: "The polynomial -16t^2 + 200t represents the height, in feet, of a model rocket t seconds after launch. The rocket contains a small firecracker that explodes 6.2 seconds after launch. Jeremy launches teh rocket straight up into the air. If sound travels at about 1144 ft/s, how many seconds after launch will Jeremy hear the firecracker go off? Round the answer to the nearest tenth of a second. Show your work." Click here to see answer by venugopalramana(3286)

 Question 50771: Hey Tutors! If you have time, could you please help me with this problem? Thanks! "Find at least one solution of x^2-x=12" - student in need :) Click here to see answer by stanbon(57977)

 Question 50754: Hello, I am trying to solve this problem x^2+4x=-4, by solving for x. I know you must equal the equation to 0, so it would look like x^2+4x+4=0, but I don't know where to go from here! Thanks, I relly appreciate it! Click here to see answer by checkley71(8403)

 Question 50706: 3x to the 5th power = 108x to the 3rd power Click here to see answer by Earlsdon(6294)

 Question 50811: Subtract and collect like terms: (2x^2-x^7-6) - (2x^3-x^7-8) Click here to see answer by tutorcecilia(2152)

 Question 50831: how do you get the height of a cone with a radius of 3 cm and a vertice from the outside of the base to the center vertice at the top of a cone that measures 7 cm? show your work. Click here to see answer by Earlsdon(6294)

 Question 51142: i have two probelms. (numbers in bold are exponents ) 1) x2-24=2x 2) 2x2+x=3 Click here to see answer by checkley71(8403)

 Question 51144: is -x^2 positive while -(x)^2 is negitive or are they both negitive Click here to see answer by rapaljer(4667)

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