# 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 621157: So I need some help please, it's solving for variables, 2x+5x=210 it should come out to be x=30 but how would you do each step and check that?? Also 30-3a>6 I would appreciate it! Thank you!! Click here to see answer by unlockmath(1614)

 Question 621094: when the sum of a number plus 2 is squared, it is 16 more than the square of that number. what is the number? Click here to see answer by math-vortex(472)

 Question 621175: Evaluate. (x)^2 − 5x, for x = −3 Click here to see answer by nerdybill(7008)

 Question 621262: Solve for h. S = 2πr + πrh Click here to see answer by unlockmath(1614)

 Question 621259: Solve for the indicated variable. a^2+b^2=c^2. Solve for b Click here to see answer by richwmiller(9144)

 Question 621345: what are the possible rational zeros and real zeros of f(x)=x^3+3x^2-2x-8 Click here to see answer by lwsshak3(6763)

 Question 621421: Simplify by removing factors of 1. (r^2-16)/((〖r+4)〗^2 ) Click here to see answer by ewatrrr(10682)

 Question 621419: Maria can shovel her driveway in 65 minutes. Bill can do the same job in 40 minutes. How long would it take Maria and Bill to shovel the driveway if they worked together? Click here to see answer by nerdybill(7008)

 Question 621456: 7x + 12 > 6x - 15 i dont remeber what section this is under can you help me solve it Click here to see answer by ewatrrr(10682)
 Question 621456: 7x + 12 > 6x - 15 i dont remeber what section this is under can you help me solve it Click here to see answer by josmiceli(9817)

 Question 621484: find all numbers for which the rational expression is undefined: 2/w-5 Click here to see answer by nerdybill(7008)

 Question 621581: could you help me simplify this expression: 4w + 3x squared - 7y - 2w I think it's 2w + 3x squared - 7y but I'm not sure. Click here to see answer by Alan3354(31532)

 Question 621616: I have two problems that I cannot seem to make sense of: multiply/simplify 6x^2+2x-4/4x^2-1 * 4x^2+4x+1/6x^2+29x-22 AND find LCD then subtract and simplify x-1/x^2-1x-6 minus x-1/x^2-4 Click here to see answer by ewatrrr(10682)

 Question 621727: Find all zeros of the function and write the polynomial as a product of linear factors. f(x)=x^4+13x^2+36 Mult choice answers: A) f(x)=(x+i)(x-i)(x+6i(x-6i) B) f(x)=(x+2i)^2(x+3i)^2 C) f(x)=(x+2+3i)^2(x+2-3i)^2 D) f(x)=(x+2i)(x-2i)(x+3i)(x-3i) Click here to see answer by ewatrrr(10682)

 Question 621756: Hi. I don't understand polynomial long division. Could someone help me? I would really appreciate it. Thanks again. Rae -4x^3 + 24x^2 - 24x + 4 by x^2 -5x + 1 Click here to see answer by lwsshak3(6763)

 Question 621770: Can you show me how ? I think I can simplify to the first stage but the second eludes me. Thanks Click here to see answer by Alan3354(31532)
 Question 621770: Can you show me how ? I think I can simplify to the first stage but the second eludes me. Thanks Click here to see answer by solver91311(17077)

 Question 621715: Place the indicated product in the proper location on the grid. (x + y + 3)(x + y - 4) Click here to see answer by solver91311(17077)

 Question 621774: 28x^2y^2 - 49x^2y I need help on factoring this. I have no clue even where to start. I don't even know what ^ means. Please help me! Click here to see answer by solver91311(17077)

 Question 621784: I cant quite figure out this question. -> There are 32 players in a single-elimination chess tournament. That is, a player who loses once is eliminated. Assuming that no ties are allowed, how many games must be played to determine a champion? How do you figure it out. Click here to see answer by Alan3354(31532)

 Question 621803: write a polynomial funtion of least degree that has real coefficients, the given zeros, and a leading coefficient of 1. 3, -3, 2i I love you. Click here to see answer by Alan3354(31532)

 Question 621827: How do you solve the equation for the given variable? 9(z-5)-6z+10=5z-43 Click here to see answer by rfer(12730)

 Question 621901: Factor by grouping, if possible, and show me how to check... much appreciated 8a^3 - 2a^2 + 12a  3 Click here to see answer by jim_thompson5910(28715)
 Question 621901: Factor by grouping, if possible, and show me how to check... much appreciated 8a^3 - 2a^2 + 12a  3 Click here to see answer by lenny460(837)

 Question 621898: factor completely. If polynomial is prime state this 28x^2+38x-6 Click here to see answer by jim_thompson5910(28715)
 Question 621898: factor completely. If polynomial is prime state this 28x^2+38x-6 Click here to see answer by lenny460(837)

 Question 621921: Perform the indicated operatoin. When no operatoin is indicated, simplify the rational expression completely. 3x^2-5x/18x-30 (3x(squared)-5x over 18x-30) Click here to see answer by jsmallt9(3296)

 Question 621893: What value of c makes the polynomial below a perfect square? 4x^2+12x+c Click here to see answer by KMST(1936)

 Question 621967: 9t^2 + 3t = 0 3t(3t + 1)= 0 My professor syas I have the factoring correct, but that I need to now solve for t. Can someone help me understand this. Thank You. Rae Henson Click here to see answer by ewatrrr(10682)