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

Algebra ->  Algebra  -> Polynomials-and-rational-expressions -> Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Polynomials, rational expressions and equations Solvers Lessons Answers archive Quiz In Depth

 Question 68804: Simplify the expression 15x^2 - x - 2 -------------- 3x^2 - 5x - 2 Click here to see answer by rmromero(383)

 Question 69041: Directions: Add or subtract as indicated. Express your result in simplest form. Problem# 54 (2)/(5w+10) - (3)/(2w-4) Problem #58 (3)/(x^2+4x+3)- (1)/(x^2-9) Problem#62 (4y)/(y^2+6y+5) + (2y)/(y^2-1) Click here to see answer by ganit(6)

 Question 69039: Directions are the same for Problems 16,24,36: Add or subtract as indicated. Express your result in simplest form. Problem#16 (5)/(4cd) + (11)/(4cd) Problem#24 (x^2)/(x-3)-(9)/(x-3) Problem#36 (5a-12)/(a^2-8a+15)-(3a-2)/(a^2-8a+15) Click here to see answer by funmath(2925)

 Question 69082: I was trying to simplify this subtraction problem:(-4x-3)-(2-1).I figured that i could change it to an addition problem like this:(4x+3)+(2x-1),which comes out to -6x-2 for the answer.Where do you think she went wrong? Click here to see answer by jim_thompson5910(28595)

 Question 69147: which of the following is a pattern for multiplying the sum and diffrence of the same terms, a + b a. a2 + 2ab + b2 b. a2 + b2 c. a2 + ab + b2 d. a2 - b2 Click here to see answer by stanbon(57347)

 Question 69148: find the area of a square with side s = 2x + 3. a. 4x2 +9 b. 2x2 + 6x +9 c. 4x2 + 6x +9 d. 4x2 + 12x + 9 Click here to see answer by checkley75(3666)

 Question 69146: find (x - 7)2 and which of the following is a pattern for squaring a binomial, a + b? a. a2 + 2ab + b2 b. a2 +b2 c. a2 + ab + b2 d. a2 - b2 Click here to see answer by checkley75(3666)

 Question 69230: is 2x-3 a factor of 8x^3-27? Explain why or why not. Click here to see answer by checkley75(3666)

 Question 69232: add 1 + 1 ----- + ------ 1 - x^2 + x - 1 Click here to see answer by checkley75(3666)

 Question 69220: Find the LCD of 7 8 ---------------,------ a^2 + 2a - 63 a+9 Click here to see answer by checkley75(3666)

 Question 69233: subtract 4x + 1 - 3x - 2 ----------------- - ----------------- 25x^2 + 15x + 2 - 30x^2 + 11x + 1 Click here to see answer by stanbon(57347)

 Question 69219: find the LCD of 1 1 ------- + ------ 1 - x^2 x - 1 Click here to see answer by stanbon(57347)

 Question 69223: perform the indicated operation. Simplify if possible. 6a^2-8a-8 / a-2 --------- / ----- 2a^2-9a-56 / a-8 Click here to see answer by ankor@dixie-net.com(15652)

 Question 69239: My question is about factoring a polynomial. The objective is to factor: 27-64z^3. This polynomial appears prime to me, but I am not sure if I am just forgetting to do something. Could I put it under a radical to get the cube roots of 27, 64, and z^3? Is that still factoring? I am sorry, this question is not from a text book. I greatly appreciate your help with this. Click here to see answer by Nate(3500)
 Question 69239: My question is about factoring a polynomial. The objective is to factor: 27-64z^3. This polynomial appears prime to me, but I am not sure if I am just forgetting to do something. Could I put it under a radical to get the cube roots of 27, 64, and z^3? Is that still factoring? I am sorry, this question is not from a text book. I greatly appreciate your help with this. Click here to see answer by checkley75(3666)

 Question 69227: perform the indicated operation. 9x + 6 * x + 1 ---------- * ------- 3x + 3 * 6x + 4 Click here to see answer by stanbon(57347)