# 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 446632: I am having trouble trying to solve the problem z-5/z+2 = 1/7 I do not know where to start on this. I am not sure if I got the lcm correct but I think it is 7(z+2) Click here to see answer by scott8148(6628)

 Question 446646: Could someone please help me with this? I do not understand it at all, thank you so much. In some other universe, K. Pack believes he has discovered a relationship between a planet’s distance D from its sun and the time T it takes to orbit its sun. This formula T= √Dł where T is in earth years and D=1 corresponds to the distance between earth and our sun, or 93,000,000 miles. (a) Planet Eta is 33 times farther from its sun than earth is to our sun. Estimate the number of earth years required for Eta to orbit its sun according to K. Pack’s formula. a.) Planet Eta takes ? (how many) Earth years to orbit its sun. (round to the nearest tenth as needed) (b) Write this formula with rational exponents. √(Dł= ?) (Simplify your answer. Use integers or fractions for any numbers in the expression) Click here to see answer by stanbon(57220)

 Question 446796: The problem says to solve 3/(x-3) - 2/(x-4) = -3/(x-3)(x-4) please include the steps you took to get this answer Click here to see answer by mananth(12270)

 Question 446811: Hi! My question has to do with long division of polynomials. I am supposed to divide 2x+5 into 2x*3+x*2+4x+35. I always start strong knowing the first term of my answer will be x*2, but then I get completely lost as to where to go from there. Any help would be greatly appreciated! Thanks! Click here to see answer by sudhanshu_kmr(1152)

 Question 446839: So I'm dealing with trinomials and I think it's along the line of polynomials. In order to solve this question I have to factor this trinomial -->32Nsquared-80N+50. Thank you for the help! Click here to see answer by nerdybill(6948)

 Question 446907: The length of a rectangle flower garden is three feet more than its width. The area is 70 square feet. Using an algbriac equation find the length and the width of the flower garden. Would I use width = x and length = x+3 = to 70? Is that how I would set this equation up? Click here to see answer by nerdybill(6948)

 Question 447061: Divide (15x/2a)/(5x^5/4ax). Simplify as much as possible. 15x / 4ax --- --- 2a 5x^5 Click here to see answer by sudhanshu_kmr(1152)

 Question 447096: Solve the equation by factoring. 49w(w)-25=0 (w is squared) Click here to see answer by poliphob3.14(115)
 Question 447096: Solve the equation by factoring. 49w(w)-25=0 (w is squared) Click here to see answer by chriswen(106)

 Question 447194: Solve for x: (x – 3)(2x – 7) = 0 x2 + 6x – 27 = 0 x2 + 6 = -5x x2 – 9 = 0 Click here to see answer by jorel1380(2518)

 Question 447601: Simplify 4(2x + 1) - 3(y + 1) Click here to see answer by stanbon(57220)

 Question 447728: Assume that y varies inversely as x. If y = -8 when x = -9, find y when x = 4 Click here to see answer by solver91311(16868)

 Question 447729: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81 Click here to see answer by josmiceli(9649)
 Question 447729: Im having trouble factoring polynomials. Can you please teach me how. Heres one of my homework problems: 36m2-81 Click here to see answer by MathLover1(6614)

 Question 447765: Can you help me find the zeros of thie equation 3x^4-4x^3-6x^2+20x Click here to see answer by solver91311(16868)