# 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 441772: Find the inverse function for y=f(x)=4x-5 Graph f and its inverse Click here to see answer by htmentor(788)

 Question 441996: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers: 2 - sqrt(a)/4 + sqrt(a) Click here to see answer by stanbon(57246)

 Question 442123: 9x2yz 18x2 + 5ab – 6y 8a – 5 4x3 + 3x2 – x – 4 x + 2xyz 3x + y + z 2x3y + y2x – 3x + 4 6x2 Click here to see answer by rwm(914)

 Question 442167: Factor this polynomial: 4m^2-25 Click here to see answer by ilana(307)
 Question 442167: Factor this polynomial: 4m^2-25 Click here to see answer by josmiceli(9661)

 Question 442216: how do i multiply x squared + x-20 over x squared by x over x + 5 Click here to see answer by ilana(307)

 Question 442319: how is dividing a polynomial by a binomial similar to or different from the long division you learn in elementary school? Click here to see answer by swincher4391(726)

 Question 442327: 9t^2+12t+4 Click here to see answer by swincher4391(726)
 Question 442327: 9t^2+12t+4 Click here to see answer by wilft1(67)

 Question 442329: x^2-11x+24 Click here to see answer by swincher4391(726)
 Question 442329: x^2-11x+24 Click here to see answer by mananth(12270)

 Question 442326: 2x^2+22x+36 Click here to see answer by mananth(12270)
 Question 442326: 2x^2+22x+36 Click here to see answer by shree840(260)

 Question 442330: My class is studying polynomials, trinomials, and rational expressions and I need help with this problem. They want me to rewrite this equation with the right side completely factored. This equation is N = -2x^2 + 76x + 430, where x = 0 I don't even know what they want from me, never mind solve it. Can anyone please help me? Thanks. Hi Shree, we as well are doing a similar equation but I am not sure how you arrived at this solution, the steps to get here would be more useful to me than the answer. Thank you. Click here to see answer by shree840(260)

 Question 442331: 5x^3-10x^2-40x Click here to see answer by shree840(260)

 Question 442337: x(x-2)+3(x-2) Click here to see answer by swincher4391(726)

 Question 442338: a(2a+5)+2(2a+5) Click here to see answer by swincher4391(726)

 Question 442339: ax^2-7ax+12a Click here to see answer by swincher4391(726)

 Question 442335: 3x^2+13x+10 Click here to see answer by swincher4391(726)

 Question 442258: 5n/30m + 2m+4n/30m Click here to see answer by swincher4391(726)

 Question 442259: Solve equation given the two indicated roots. X^4-3x^3-8x^2+12x+16=0 Click here to see answer by swincher4391(726)

 Question 442509: Factor polynomial completely x^2-17x-84 Click here to see answer by stanbon(57246)

 Question 442511: Joe's Home Store finds that at a price of p = \$30 each they would sell x = 64 hand saws each month. However, if they lower the price to p = \$15, then they can expect to sell x = 79 saws in a month. Find the equation of the line for the above information. Write your answer in the form p = mx + b. Hint: Use the slope formula first. Joe's Home Store is looking for an equation to calculate revenue, or the amount of money that comes in from sales because business costs are subtracted. For a single product, we can find the revenue by multiplying the quantity of the product sold by the demand equation. Hint: Substitute the result you found in question 3 into the equation R= xp to find the revenue equation. Provide your answer in simplified form. Joe's Home Store has fixed costs, such as rent, insurance and wages, and variable costs, which are the costs to purchase the product they are selling. Joe's Home Store has fixed costs of \$200 for saws and the variable cost for each saw is \$5 each. Find the cost equation for the saws. Write your answer in the form C = mx + b. To calculate profit subtract the costs from the revenue. Find the profit equation by substituting your equations for R and C into P = R - C. Simplify the equation. What is the profit made from selling 20 saws each month? What is the profit made from selling 25 saws each month? What is the profit made from selling no tiles each month? Interpret your answer. Click here to see answer by stanbon(57246)

 Question 442547: please help me. I have been trying to divide the polynomial (t^3-t^2+t-1)divide(t-1). i have been unsuccessful.i wrote divide because i could not make the symbol. Click here to see answer by stanbon(57246)

 Question 442549: hi my name is rita please help me to solve the polynomial(t^3-t^2+t-1)divide(t-1). i wrote divide because i can not make the sign.i have attempted to solve the problem , but has been unsuccessful. thank you Click here to see answer by stanbon(57246)
 Question 442549: hi my name is rita please help me to solve the polynomial(t^3-t^2+t-1)divide(t-1). i wrote divide because i can not make the sign.i have attempted to solve the problem , but has been unsuccessful. thank you Click here to see answer by scott8148(6628)

 Question 442544: my question is to divide and check the polynomial (t^3-t^2+t-1)divide(t-1). i have been trying to work the problem, but i am having trouble.also, i wrote divide because i could not make the symbol. my name is Rita. thanks for your help Click here to see answer by MathLover1(6622)

 Question 442607: x/(x-6)-6/(x+6)=72/(x^2-36) Click here to see answer by swincher4391(726)

 Question 442414: Please use the laws of exponents to simplify: 3.7^(7/4)/ 3.7^(4/7) **Please note that the squared portion is a fraction** Click here to see answer by ankor@dixie-net.com(15638)

 Question 442660: 6/7=5/y Click here to see answer by swincher4391(726)
 Question 442660: 6/7=5/y Click here to see answer by nerdybill(6950)

 Question 442669: Solve: 7/y = 8/y - 1/3 Click here to see answer by robertb(4012)

 Question 442674: Multiply and simplify 8y^5/5x^3 times 25x^5/64y I came up with 5y^4x^2/8 is that correct Click here to see answer by stanbon(57246)

 Question 442681: will you help me to divide this polynomial (t^3-t^2+t-1)divide(t-1) using long division and also check the problem. thank you. Click here to see answer by swincher4391(726)

 Question 442693: Solve z-1/z-8 = 7/z-8 I came up with there is no solution. Is that correct? Click here to see answer by swincher4391(726)

 Question 442697: Solve. 5/x + 3 = 4/x - 3 Click here to see answer by swincher4391(726)

 Question 442694: Mary can shovel snow from her driveway in 40 minutes. Bill can do the same job in 65 minutes. How long would it take Mary and Bill to shovel the driveway if they worked together. Click here to see answer by josmiceli(9661)
 Question 442694: Mary can shovel snow from her driveway in 40 minutes. Bill can do the same job in 65 minutes. How long would it take Mary and Bill to shovel the driveway if they worked together. Click here to see answer by Alan3354(30983)

 Question 442687: Divide and simplify x^2 - 16/x divided by x +4/x + 5 I got (x - 4)(x +5)/x Click here to see answer by Alan3354(30983)

 Question 442925: i need help with this problem x-2 over x+3 equals 3/4 Click here to see answer by Alan3354(30983)

 Question 442927: i need help with this problem divide 56 into two parts such that 3/8 of the larger number decreased by 6 equals 1/4 of the smaller number. Click here to see answer by swincher4391(726)

 Question 442932: Add. Simplify ifpossible. z^2 + 11z/z^2 - 2z + z^2 - 8z/z^2 - 2z I got 2z +3/z - 2. Is that correct Click here to see answer by swincher4391(726)

 Question 442946: How to factor completely? So far I already have , but I don't know if it's COMPLETELY factored. Thanks! Click here to see answer by swincher4391(726)

 Question 442949: Subtract. Simplify if possible 2/x -2 - 2/2-x I got 4/v - 2. Is that correct? Click here to see answer by swincher4391(726)

 Question 442951: Add. simplify if possible 7/(x - 1) + 2/(x-1)^2 I got 7y - 5/(x - 1)^2. Is that correct? Click here to see answer by swincher4391(726)

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