# 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 596727: Factor the expression: x^3 + 4x^2 + x + 4 Click here to see answer by rapaljer(4667)

 Question 596771: I keep looking at this problem, and I know it's basic, but I cannot remember how to solve it.I have a similar problem on an exam, so I'm hoping to remember the process before attempting the exam. Thanks! Simplify by removing factors of 1. X^2-9x+20/X^2+x-20 Click here to see answer by rapaljer(4667)

 Question 596788: Find all the numbers for which the rational expression is undefined. 4/6w+5 Click here to see answer by solver91311(16885)

 Question 597016: if x=square root 7 is aroot of x^3-3x^2-7x+21=0, use synthetic division to factor the polynomial completely and list all real solutions of the equation. Click here to see answer by lwsshak3(6498)

 Question 597146: Referring to the figure, simplify the expression shown. 3 sqrt 5 + 4 sqrt 5 Click here to see answer by solver91311(16885)

 Question 597138: Solve the equation by a method of your choice: x^2 + 12x + 36 = 0 If there are two solutions, separate the solutions by a comma. Click here to see answer by richwmiller(9135)

 Question 597131: Solve the equation by a method of your choice: 6x2 + 5x + 1 = 0 If there are two solutions, separate the solutions by a comma. Click here to see answer by scott8148(6628)

 Question 597132: Solve the equation by a method of your choice: 4x2 + 15x + 9 = 0 If there are two solutions, separate the solutions by a comma. Click here to see answer by scott8148(6628)

 Question 597135: Solve the equation by a method of your choice: x^2 - 36 = 0 If there are two solutions, separate the solutions by a comma. Click here to see answer by scott8148(6628)

 Question 597187: I need help with this PLEASE!!! Factor. Check by multiplying. 9x7y5 + 54x5y4 + 36xy Click here to see answer by AnlytcPhil(1276)

 Question 597199: for what value of x is the rational expression below equal to zero? x minus 9 over (x - 4)(x + 4) Click here to see answer by stanbon(57342)

 Question 597257: shows the expression below, factored completely? 18x2y2 + 36x3y3 – 27x3y Click here to see answer by ankor@dixie-net.com(15650)

 Question 597362: Having problems simplifing this equation x-y/xy - a-y/ay Click here to see answer by solver91311(16885)

 Question 597417: Is p(x) = -.1x^2 + 50x - 300, a polynomial? Click here to see answer by Alan3354(30993)

 Question 597396: Write this polynomial in standard form. What is the leading coefficient? (t-3)(4t-1)(3t-7) I need to know how to do it step by step so please show all work. Click here to see answer by math-vortex(472)

 Question 597503: the length of a rectangle is 2 cm greater than twice its width. The area of the rectangle is 40 cm^2. find the dimensions of the rectangle. Click here to see answer by ExplanationCentral(10)

 Question 597684: Please help me understand the following: Is the following true or false? Explain. 3x + 2y / 27x^3 + 8y^3 is equal to 1 / 9x^2 - 6xy + 4y^2 Thank you. Click here to see answer by stanbon(57342)

 Question 597736: 10x^3+15x^2+12x+18=0 i am having trouble working it cant seem to solve Click here to see answer by scott8148(6628)

 Question 597744: 5+i over -4-6i not sure how to work with the imaginary numbers stuck thanks so much Click here to see answer by scott8148(6628)

 Question 597877: I am trying to finish a problem where I am multiplying rational expressions. This is what I have simplified it down to: (c-1)*(2c+1)/(c^(2)-1). I know I must factor out (c-1) and (c^(2)-1) and the greatest common factor is (c-1). I have used algebra.com's solver and I know the answer is (2c+1)/(c+1). But how do I get (c+1) from factoring (c^(2)-1) by (c-1)? Thank you! Click here to see answer by jim_thompson5910(28595)

 Question 597865: If someone could possibly help me with this I would be very grateful. Find the variation constant and an equation of variation where the y varies inveresly as x&y=5 when x=14 Click here to see answer by Edwin McCravy(8909)

 Question 597921: factor the area to determine the length and width of this rectangle A=8x squared+14x-15 Click here to see answer by stanbon(57342)

 Question 598111: How do I solve the equation b/b-1 + 2/b-4 ? can I just use the quadratic equation? when I use the quadratic equation it comes out is that the correct answer? Click here to see answer by stanbon(57342)

 Question 598118: write (-10) to the fifth power in standard notation? Click here to see answer by stanbon(57342)

 Question 598177: Find the product: (x + 3)(x + 2) and Find the product: (2x + 1)(x + 3) Click here to see answer by Alan3354(30993)

 Question 598178: Find the product: (x + 1)(x2 + x + 1) Click here to see answer by Alan3354(30993)