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

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Algebra: Polynomials, rational expressions and equations

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Question 15988: x^2 + 12x-28
Click here to see answer by pwac(251)

Question 15992: (2x exponent3- 6x-36)(x-3)
Click here to see answer by pwac(251)

Question 16048: x^2+14x+45=0
Click here to see answer by rapaljer(3620)

Question 16200: Factor the equation
10(y+7)-x(y+7)
thank you
Click here to see answer by mds07(1)

Question 16268: Factor each trinomial:
6). 18x^2-27x-5
8). 18y^2+ 9y -5
Click here to see answer by Earlsdon(4898)

Question 16277: x^-7
Click here to see answer by rapaljer(3620)

Question 16452: how do you solve the polynomial equation 3x^2+11x-4=0
Click here to see answer by shirsenduban(10)

Question 16370: Can anyone show me how to do this properly please.
3x^2-6x/3x^3 divided by x-2/6x^2
Your help will be greatly appriciated.
Click here to see answer by rahman(247)

Question 16464: Your help with this would be greatly appreciated.
"List the possible rational zeros of f(x)= 4x^3 + 12x^2 - x + 15. (Use rational zeros theorem)."
I know you have to use all the factors of the denominator and the numerator.
Which I believe are, 1,2,4,3,5,15 then combinations of fractions. But am still confused.
Click here to see answer by rapaljer(3620)

Question 16514: x^16-1
Click here to see answer by Earlsdon(4898)

Question 16527:
Factoring
Click here to see answer by rahman(247)

Question 16517:
Click here to see answer by rahman(247)

Question 16526: I have an multiplication problem with a binomial.The problem is( 4x with a square root of two minus 3y)multiply it by itself
Click here to see answer by rapaljer(3620)

Question 16548: 100x^4-16y^4
Click here to see answer by rapaljer(3620)

Question 16542: 10^2+27+5
Click here to see answer by rapaljer(3620)

Question 16552: 60xy^2-20xy-45y
Click here to see answer by rapaljer(3620)

Question 16515: 9a^2-30ab+b^2
Click here to see answer by rapaljer(3620)

Question 16536: if (a+2)x^2- 2ax - a = 0

what is range of a ?
Click here to see answer by AnlytcPhil(958)

Question 16558: 14+3x(x+2)=-7x
Click here to see answer by venugopalramana(3286)

Question 16559: 2x^3-x^2-15x
Click here to see answer by rapaljer(3620)

Question 16575: Hello, here is my problem:
(U^6 + V^6 + 2U^3V^3) / (U^3 -V^3 + U^2V –UV^2)
The answer is= (U^2-UV+V^2)^2 / (U-V)
I have been working on it for about three hours, I just need the steps to help me figure it out. Please and Thanks!

Click here to see answer by Earlsdon(4898)

Question 16731: Hello, I'm having trouble factoring a binomial. the problem is
50x2 - 200. (Its 50 x squared minus 200) I thought the answer was

50(x+2) (x-100). Is this correct? Thank you for your assistance.

Click here to see answer by Earlsdon(4898)

Question 16646:
Click here to see answer by rahman(247)

Question 16730: 5{a-2b}-3a{4-b}
Click here to see answer by rahman(247)

Question 16742: Plase help me factor this problem:
x^3 + 3x^2 - 25x - 75. thank you for your help!!!
Click here to see answer by Earlsdon(4898)

Question 16799: Hello!
Could someone please help me with this math problem?
(6y^2 -y -2) / 2y+1 over 3y-2
Thank you!
Angela C.

Click here to see answer by rapaljer(3620)

Question 16801: Hello all,
Could someone help me please with this problem?
I am having a meltdown with polynomials, LCDs and division.
I am supposed to find the LCD, convert into an equivalent rational expression, with the LCD as the denominator.
3 /84a and 5/63b
Thank you!
Angela C.
Click here to see answer by rapaljer(3620)

Question 16814: Could someone help me please with this problem?
I am having a meltdown with trinomials and factoring.
I am supposed to factor each trinomial using trial and error, I am STUCK!:
15x^2-x-2 and 15x^2 + 13x-2
Thank you in advance and all help is appreciated!
Angela
Click here to see answer by Earlsdon(4898)

Question 17233: The tens digit of a two digit number is twice the units digit. If the digits are reversed, the new number is 36 less than the original number. Find the number. HELP!
Click here to see answer by plourde216(7)

Question 17435: Hi There!
I really need help understanding Factoring with a Zero Product. Could someone please explain this problem to me?
-2x^2 -2x + 24=0
Thanks to all

Click here to see answer by bam878s(76)

Question 17517: Okay, I'm totally confused and I've been working on this for over an hour, please help...
Evaluate the following polynomial:
f(x) = 3x^2-x+7, f(1)
Step-by-step help would be greatly appreciated...thanks in advance
Click here to see answer by venugopalramana(3286)

Question 17542: Find the slope, if it exists, of the line containing the pair of points (4,-8) , and (-7,-8)
Click here to see answer by Kenisha211(1)

Question 17497: My granddaughter is having a very difficult time with her algebra. Although I have always been very good a math of most kinds, I do not understand what the teachers are asking her to do. Could you please help explain how to do a problem such as this:
(((3x^2 + 7x + 2))) or (((3n^2 + 2n - 1))) They are asking her to factor each trinomal.
I feel that if I understand the solution, then I can help her to understand how to find the solution. She was given 4 pages of this type of homework and no book to explain it. Your assistance will be greatly appreciated. Thank you in advance and I have left my e-mail address for you to contact me that way.
Pat
Click here to see answer by rapaljer(3620)

Question 17594: Add these expressions.
a+6/a+2 + 16/a^2-4

Click here to see answer by rapaljer(3620)

Question 17683: Hi i would really appreciate it if someone would help me with this problem.
If is a perfect square, then prove p,q,r are in harmonic progression.
I know that i should prove somehow that i think i can do this using but i thought that it only applied to quadratic equations of the form Please help. Thanks
Click here to see answer by venugopalramana(3286)

Question 17822: x/3+3x/4=13/3
Click here to see answer by venugopalramana(3286)

Question 17821: 4w+1/4w-w-2/6w=2
Click here to see answer by venugopalramana(3286)

Question 17900: (x+5)(x+__)= x^2+8x+15
Click here to see answer by pwac(251)

Question 17571: Simplify: -12 / (2)^2 * 3
Click here to see answer by ivy12003(22)

Question 17877: Factor
8ab3 + 27a4

4x2 - 39x + 27

Click here to see answer by xcentaur(357)

Question 17983: Hello all!
Thank God for the Matha Tutors!. Could someone please help me get with this one? Here it is:
z^2 + 11/2z = -6, The answer in the book say its (-3/4,-4)
Could someone explain this to me?
Thanks to all,
AC
Click here to see answer by xcentaur(357)

Question 17938: x^2+2x+4=(x-1)*(_____)+(_____)

Click here to see answer by xcentaur(357)

Question 18026: Find each product?
(x + 7)(x + 3)
I got this far: x^2 + 21 Am I finished or is there more to it?
Click here to see answer by tennis_math(7)

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