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

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 Question 260574: I am not sure if this is the correct topic to click, but here it goes anyways. Can you please help me Divide this equation. Can you please explain it out step by step? I am having a hard time understanding how to divide. Divide: x^2+7x+4 BY x+2 Thank you Click here to see answer by richwmiller(10276)

 Question 260589: Can someone please tell me how to find the product of this equation: 4x(4x-1)(2x+9) Click here to see answer by richwmiller(10276)

 Question 260604: Can someone find the product of: (4x + 5y)(-4x - 3y + 1) Thank you. Click here to see answer by Alan3354(34677)

 Question 260664: Solving rational equations. There are two fractions on one side of the equal sign, one on the other side. (5/x-3) + 1/6 = 7/x-2 The numerators are 5, 1, and 7 The denominators are x-3, 6, and x-2 The question is NOT 5 divided by x -3 plus 1 divided by 6 = 7divided by x minus 2 I have multiplied by LCD and tried to find solutions by solving for 0. I got: x^ -5x -27=0 But I cannot factor this to solve! Please help, I have spent a lot of time on this! Click here to see answer by jsmallt9(3438)
 Question 260664: Solving rational equations. There are two fractions on one side of the equal sign, one on the other side. (5/x-3) + 1/6 = 7/x-2 The numerators are 5, 1, and 7 The denominators are x-3, 6, and x-2 The question is NOT 5 divided by x -3 plus 1 divided by 6 = 7divided by x minus 2 I have multiplied by LCD and tried to find solutions by solving for 0. I got: x^ -5x -27=0 But I cannot factor this to solve! Please help, I have spent a lot of time on this! Click here to see answer by mananth(13127)

 Question 260743: Help!!! The height, in meters, of a ball t seconds after it has been thrown is approximated by -4.9t^2 + 15t + 2. How high is the ball 2 sec after it has been thrown? Click here to see answer by jim_thompson5910(29613)
 Question 260743: Help!!! The height, in meters, of a ball t seconds after it has been thrown is approximated by -4.9t^2 + 15t + 2. How high is the ball 2 sec after it has been thrown? Click here to see answer by richwmiller(10276)

 Question 260765: Hello, Can you please teach me how to Factor the Polynomial for this problem: 15(m - 1)^2 - 22(m - 1) - 5 Thank you Click here to see answer by Fombitz(13828)

 Question 260817: the perimeter of a rectangle is 280cm the length is 20cm more than the width. what are the demensions of the rectangle Click here to see answer by checkley77(12569)

 Question 260909: Divide and simplify. 11x minus 55 over 21 divided by x minus 5 over 6x. in other words 11x-55/21 divided by x-5/6x ? Can someone please please help me with this problem? I would greatly appreciate your help. Click here to see answer by drk(1908)

 Question 260979: Find, by factoring, the 5 real zeros of P(x) = x^5 – 25x^3 + 144x. Click here to see answer by richwmiller(10276)

 Question 261009: I know this is a large problem,but I have no clue how to get started on it. Can someone please help me understand also? Thank you Mareellen 4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC plumbing pipe be? Click here to see answer by richwmiller(10276)
 Question 261009: I know this is a large problem,but I have no clue how to get started on it. Can someone please help me understand also? Thank you Mareellen 4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC plumbing pipe be? Click here to see answer by solver91311(18785)

 Question 260983: Use synthetic division and the Factor Theorem to determine whether (x + 1/2) is a factor of P(x) = 10x^4 + 9x^3 – 4x^2 + 9x +6. Click here to see answer by jsmallt9(3438)

 Question 261024: The number of ways a class of n student can elect a president, a vice president, a secretary, and a treasurer is given by the function P(n) = n^4 – 6n^3 + 11n^2 – 6n, where n >= 4. Use the Remainder Theorem to determine the number of ways the class can elect officers if the class consists of (a) n = 12 students (b) n = 24 students Click here to see answer by stanbon(60771)

 Question 260978: find the GCF of the two expressions 9w^6z^8 and 12t^7wz^2 Click here to see answer by checkley77(12569)

 Question 261059: The office jet printer can copy Maria's dissertation in 14 minutes. The laser jet printer can copy the same document in 12 minutes. If the two machines work together how long would they take to copy the dissertation. I thought that I should do this: Office Jet = 1/14 Laser Jet = 1/12 1/14+1/12, but the result is 13/84 of a minute, I know this is not correct, can someone help me to find the correct formula please? Click here to see answer by solver91311(18785)

 Question 261055: Find all numbers for which the rational expression is undefined. 9/x-5 Now the instructions for this problem say that I should set the denominator to 0 and solve for x, but what about the 9? The answer that I came up with is 0, but I am not sure if it is correct. Click here to see answer by ankor@dixie-net.com(16523)

 Question 261089: What is 2a with the exponent of 1/2+a with the exponent of 3/2 all over a with an exponent of 1/2 equal to? Click here to see answer by stanbon(60771)

 Question 261141: Can you please help me with the following problem? The problem asks you to find an equation in slope intercept form with the line with y-intercept 4 and perpendicular to x + 5y = 7 Any help would be greatly appreciated! Click here to see answer by palanisamy(496)

 Question 261136: I need help on how to Factor the Polynomial. I asked a similar question earlier, but the answer was wrong and I didnt understand how it was worked. Could someone go through and answer this question for me please? Factor the Polynomial: 12x^8-18x^4y^5-10x^4y^5+15y^10 Wouldn't I combine the like terms of xy first? Thank you Click here to see answer by richwmiller(10276)
 Question 261136: I need help on how to Factor the Polynomial. I asked a similar question earlier, but the answer was wrong and I didnt understand how it was worked. Could someone go through and answer this question for me please? Factor the Polynomial: 12x^8-18x^4y^5-10x^4y^5+15y^10 Wouldn't I combine the like terms of xy first? Thank you Click here to see answer by jsmallt9(3438)

 Question 261286: Find a polynomial function having the following zeros: – 5, 3 (multiplicity 2), 2 + i, 2 – i; degree 5. Click here to see answer by jim_thompson5910(29613)

 Question 261313: m^2+7m+12/m^2-8m+16 + m+3/m^2-16 =(m+3)(m+4)/(m-4)(m-4)+(m+3)/(m-4)(m-4) =(m+3)(m+4)(m+4)/(m-4)(m-4)(m+4)+(m+3)(m-4)/(m-4)(m-4)(m+4) =(m+3)((m+4)(m+4)+(m-4)/((m-4)(m-4)(m+4) =(m+3)(m^2+8m+16+m-4)/((m-4)(m-4)(m+4) =(m+3)(m^2+9m+12)/(m-4)(m-4)(m+4) OR m^2+7m+12/m^2-8m+16 + m+3/m^2-16 =(m+3)(m+4)/(m-4)(m-4)+(m+3)/(m-4)(m-4) =(m+3)(m+4)(m+4)+(m+3)(m-4)/(m-4)(m-4)(m+4) =(m^2+7m+12)(m+4)+(m^2-m-12)/(m-4)(m-4)(m+4) =(m^3+7m^2+12m+4m^2+28m+48)+(m^2-m-12)/(m-4)(m-4)(m+4) =(m^3+11m^2+40m+48+m^2-m-12)/(m-4)(m-4)(m+4) =(m^3+12m^2+39m+36)/(m-4)(m-4)(m+4) = m(m^2+12m+39)+36/(m-4)(m-4)(m+4) Are any of these correct? If yes, which one is? If not, please show me how to do this correctly. Thank you very much! Click here to see answer by Edwin McCravy(9717)

 Question 261445: If a^2 + b^2 = 11 and ab=3, what does (a + b)^2 and (a-b)^2 equal? thnx Click here to see answer by palanisamy(496)
 Question 261445: If a^2 + b^2 = 11 and ab=3, what does (a + b)^2 and (a-b)^2 equal? thnx Click here to see answer by drk(1908)