# 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 280570: The base of a triangle is 6cm greater than the height. The areas is 20cm^2 Find the height and length of the base height of triangle is ____ cm. base of triangle is ____ cm. Click here to see answer by richwmiller(9144)
 Question 280570: The base of a triangle is 6cm greater than the height. The areas is 20cm^2 Find the height and length of the base height of triangle is ____ cm. base of triangle is ____ cm. Click here to see answer by oberobic(2304)

 Question 280572: Can you please find two examples of prime polynomials? Given a polynomial such as x^2 + 4x + 8 how would I decide if this is factorable or not? What logic would you use to come up with your answer? What about a more complicated polynomial such as 3x^2 + 12x + 4? How would you decide if this is prime or not? Click here to see answer by richwmiller(9144)

 Question 280442: list the potential rational zeros of the polynomial function, do not find the zeros. f(x)=x^5-5x^2+4x+3 Click here to see answer by jsmallt9(3296)

 Question 280456: form a polynomial f(x) with real coefficients having the given degree and zeros. degree: 4; zeros: -1, 2, and 1-2i. Click here to see answer by jsmallt9(3296)

 Question 280450: form a polynomial f(x) with real coefficients having the given degree and zeros. degree: 4; zeros: -1, 2, and 1-2i. Click here to see answer by jsmallt9(3296)

 Question 280820: how do I factor and then solve using the principal of zero? 2x^2 +20 = x^2 + 9x do I add -2x^2 to both sides 20 = -x^2 + 9x add -20 both sides 0 = - x^2 + 9x -20 is this right? then what? Click here to see answer by Alan3354(31534)
 Question 280820: how do I factor and then solve using the principal of zero? 2x^2 +20 = x^2 + 9x do I add -2x^2 to both sides 20 = -x^2 + 9x add -20 both sides 0 = - x^2 + 9x -20 is this right? then what? Click here to see answer by Grinnell(63)
 Question 280820: how do I factor and then solve using the principal of zero? 2x^2 +20 = x^2 + 9x do I add -2x^2 to both sides 20 = -x^2 + 9x add -20 both sides 0 = - x^2 + 9x -20 is this right? then what? Click here to see answer by mananth(12270)

 Question 280966: Find the LCD for the given rational expressions and convert the rational expressions into equivalent rational expressions with the LCD as the denominator 4/a-3, 5x/3-a Click here to see answer by stanbon(57979)

 Question 281038: I need help with rational expressions and equations. [[[12/x = 3]]] Click here to see answer by brucewill(101)

 Question 281098: how do I evaluate polynomials 2x^2y-xz^3 for x = -3 y=1 and z= 3 Please explain Thanks Click here to see answer by richwmiller(9144)

 Question 281185: What is the simplified form of: f(x)= 2x^4 + 10x^3 - 2x^2 - 10x / x^4 - x^3 - 2x? So far I have: (2x^2-2)(x+5)/x(x^3-x^2-2) but i don't know if that is right. Click here to see answer by vleith(2825)

 Question 281272: Area of a painting. A rectangular painting with a width of x centimeters has an area of x^2 + 50x square centimeters. Find a binomial that represents the length. Click here to see answer by vleith(2825)

 Question 281277: Amount of an investment. The amount of an investment of P dollars for t years at simple interest rate r is given by A = P + Prt. a) Rewrite this formula by factoring out the greatest common factor on the right-hand side. b) Find A if \$8300 is invested for 3 years at a simple interest rate of 15%. Click here to see answer by rfer(12730)

 Question 281409: (a+b+c+d)4th power (I WANT THE FULL WORKING AND NOT JUST THE ANSWER WANT TO SEE HOW YOU DID IT) Click here to see answer by Mathematicians(84)

 Question 281508: I have this equation and i have tried many a times and continue to get it wrong. It is multiplying polynomials. This is the original equation (2x^2-5x-1)(x^2+x-3) and this is what ive tried. 2x^2(x^2)3x^4 2x^2(x)3x^3 2x^2(-3)-6x^2 -5x(x^2)-5x^3 -5x(x)-5x^2 -5x(-3)15x -1(x^2)-1x^2 -1(x)-1x -1(-3)3 And this is my answer. 3x^4+3x^3-12x^2+14x-5x^3+3 Click here to see answer by Mathematicians(84)
 Question 281508: I have this equation and i have tried many a times and continue to get it wrong. It is multiplying polynomials. This is the original equation (2x^2-5x-1)(x^2+x-3) and this is what ive tried. 2x^2(x^2)3x^4 2x^2(x)3x^3 2x^2(-3)-6x^2 -5x(x^2)-5x^3 -5x(x)-5x^2 -5x(-3)15x -1(x^2)-1x^2 -1(x)-1x -1(-3)3 And this is my answer. 3x^4+3x^3-12x^2+14x-5x^3+3 Click here to see answer by JBarnum(2044)

 Question 281418: Find all numbers (rational expressions) where the solution is undefined: w-1 ----- = 9 Click here to see answer by richwmiller(9144)
 Question 281418: Find all numbers (rational expressions) where the solution is undefined: w-1 ----- = 9 Click here to see answer by Mathematicians(84)

 Question 281596: Factor as completely as possible. a) b) c) Hello! You dont have to do all three of these (unless you want too; go ahead and knock yourself out ;) ) What I wanted to know was if someone could please explain to me how I would factor these as completely as possible? Thank you Click here to see answer by Mathematicians(84)
 Question 281596: Factor as completely as possible. a) b) c) Hello! You dont have to do all three of these (unless you want too; go ahead and knock yourself out ;) ) What I wanted to know was if someone could please explain to me how I would factor these as completely as possible? Thank you Click here to see answer by JBarnum(2044)