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 27020:
Click here to see answer by mbarugel(146)

Question 27088: 2t-1=4?
Click here to see answer by askmemath(368)

Question 27136: here's another one ?????
Find the quotient (e^2-e-12)divided by(e-4)
Click here to see answer by kev82(145)

Question 27135: could someone help me with this one?
Find the quotient 5cd divided by 10c/d
?????????????
Click here to see answer by askmemath(368)

Question 27341: Our math teacher gave us this problem and he said we should get to know it well. The problem is and he told us to simplify. I got for a answer. I dont feel that it is right, what do you think?
Click here to see answer by bmauger(101)

Question 27340: We have this homework question on a worksheet. Our algebra teacher said we need to be sure on the answer because we will have it on at least one quiz.
Here is what he gave us. and he told us to simplify.
I got this as a final answer: . Is this right???? Thanks, Luke
Click here to see answer by bmauger(101)

Question 27324: How do you do these questions I really do need help on these
2(5w-12)=6(-2w+3)+2
1/2(2d-34)=2/3(6d-27)
y(y+12)-8y=14+y(y-4)
a(a+8)-a(a+3)-23=3a+11
Click here to see answer by Alwayscheerful(414)

Question 27336: can you help me with this problem? . i tried to work it out and i got. . but 3 would go into this again, making the problem. . but 6x7=42, not 36. please help me with this problem and tell me if i'm doing anything wrong.
Click here to see answer by Z(8)

Question 27358: We have had extreme trouble with this one. There are four of us and each of us comes up with a different polynomial to the fourth degree. Here it is: We have a circle (x-1)^2 + y^2 = 8 intersected by the parabola y = 1/4(x-1)^2 + 1. The question wants us to find the points of intersection between the parabola and the circle. We can see by the graph that the parabola intersects the circle at (-1,2) and (3,2) but we are having trouble with the actual equation. We know that we need to substitute and get this equation: (x-1)^2 + [1/4(x-1)^2 + 1]^2 = 8. This is where we are having troubles with simplifying the polynomial - we all get a different polynomial to the fourth degree. Can someone help? We would really appreciate a step-by-step to see where we are going wrong.
Thanks for your help
Melissa
Click here to see answer by stanbon(26259)

Question 27471: Geometry. A triangle has sides 3x + 7, 4x - 9, and 5x + 6. Find the polynomial that represents its perimeter.
Can someone please give me some help. I am totally lost.
Thank you very much.
Click here to see answer by Z(8)

Question 26705: The difference of the squares of two consecutivee odd positive integers is 40. find the integers.
Click here to see answer by venugopalramana(3286)

Question 27476: Any assistance you could offer would be great. I am supposed to factor out the greatest common factor and simplify factors if possible. I think the greatest common factor is 5-x^2, but am not not sure where to go from there.
3(5-x)^4+2(5-x)^3-(5-x)^2
Thank you!

Click here to see answer by longjonsilver(2297)

Question 27465: Social science. If there are 6 x 10^9 people on the Earth and there is enough freshwater to provide each person with 8.79 x 10^5 L, how much freshwater is on the Earth?
I'm struggling, please help.
Thank you in advance.
Click here to see answer by longjonsilver(2297)

Question 27463: Simplify each of the following expressions. Write your answers with positive exponents only.
(x^2)^-3(x^-2)
__________________
(x^2)^-4

Please help, I am struggling.
Thank you so much.
Click here to see answer by longjonsilver(2297)

Question 27464: Write your result in scientific notation.
(6 x 10^12)(3.2 x 10^8)
_______________________
(1.6 x 10^7)(3 x 10^2)

Please help me.
Thanks so much.
Click here to see answer by longjonsilver(2297)

Question 27470: Subtract, using the vertical method.
7x^2 + 6x from 9x^2 - 3
I need some help.
Thank you
Click here to see answer by prabhjyot(164)

Question 27469: Add, using the vertical method.
5x^2 + 2x - 4, x^2 - 2x - 3, and 2x^2 - 4x - 3
I really need help. I appreciate it.
Thank you
Click here to see answer by prabhjyot(164)

Question 27467: Subtract.
4x - 2x^2 + 4x^3 from 4x^3 + x - 3x^2
I need help.
thank you.
Click here to see answer by Earlsdon(4898)

Question 27439: factoring trinomials
2x²+5x+2
Click here to see answer by prabhjyot(164)

Question 27450: Factor completely:
x2 – 5x – 14

Factor completely:
3x2 – 2x – 8

Factor completely:
24x2 + 10x – 4

Click here to see answer by Earlsdon(4898)

Question 27466: Add.
Note - this is one problem, not two.
5b^3 - 8b + 2b^2 and 3b^2 - 7b^3 + 5b
Please help.
Thank you so much.

Click here to see answer by vincygrrl22(7)

Question 27567: Multiply.
7w(2w - 3)(2w + 3)
I am about to give up. Please help me.
Thank you.
Click here to see answer by josmiceli(3003)

Question 27574: The section I am doing is Solving Rational Equations.
The problem is 2/x+1 = 1/x-2. This is how I've tried it making the LCD (x+1)(x-1). Then I see how many times the numerator goes into the denominator. I multiply the numerator by the denominator that it doesn't have already. For example I'd multiply 2 by x-2. "/" That I use as a division bar. The answer in the back of my book says 5. I would just like this problem done so I can do the rest!
Thank you very, very, very, very much!
Click here to see answer by Earlsdon(4898)

Question 27570: Find each of the following squares.
(7p + 6q)^2
I need your help.
Thank you.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27568: Multiply the following.
(x/3 + 3/4)(3x/4 - 3/5)
Thanks for your help.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27563: Multipy. (x - 10)(x + 9)
These are so confusing to me.

Please help.
Thank you.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27562: Multiply. 8pq^2(2pq - 3p + 5q)
I need help, I really thank you.
Please.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27566: Multiply using the vertical method.
(2r - 3s)(4r^2 + 6rs + 9s^2)

I'm struggling. Help.
Thank you

Click here to see answer by wuwei96815(245)

Question 27667: Let x represent the number and then write an expression for the product.
The square of 5 more than a number.
I do not understand this. Please help.
Thanks.
Click here to see answer by bmauger(101)

Question 27668: Geometry. A square has sides of length 3x - 2 cm. Express the area of the square as a polynomial.
I have no idea. Please help.
Thanks.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27666: Find each of the following products.
a(a + 5)(a - 5)
Please help me.
Thank you.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27665: Find each of the following squares.
(w - 1/4)^2
please help.
Thank you.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27663: Perform the indicated divisions.
8x^3 - 6x^2 + 2x
________________
4x + 1
I am no good at this.
I appreciate your help. Thank you.
Click here to see answer by longjonsilver(2297)

Question 27661: Divide.
7x^5y^5 - 21x^4y^4 + 14x^3y^3
____________________________
7x^3y^3
Please help me, I have been on this problem over 30 minutes.
Thank you so much.
Click here to see answer by longjonsilver(2297)

Question 27664: Find each of the following squares.

I don't understand this. Please help.
Thank you.
Click here to see answer by wuwei96815(245)

Question 27664: Find each of the following squares.

I don't understand this. Please help.
Thank you.
Click here to see answer by mbarugel(146)

Question 27662:
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27702: simlify: y^2-6y+9
_________

y^2-3y
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27734: Simplify 10^5+8*10^3+10^2+3*10+6
I want to say its 180,536?
How do I know where each number is placed? Thank you very much!
Jamie
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27704: i have no clue how to do this: -2X^3y^2(6x^2y^3+2x^2-3x^3y)
the ^ means the the following # is an exponent....
Click here to see answer by askmemath(368)

Question 27762: I don't get this?
if g(x)=-7+2, find g(-6)
Click here to see answer by Earlsdon(4898)

Question 27807: Geometry. The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle.
Help.
Thank You.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27805: Factor each of the following polynomials.
4s + 6st - 14st^2
Lost.
Thank you.
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27803: Find the greatest common factor for each of the following set of terms.
12a^3b^2, 18a^2b^3, 6a^4b^4
Please help. I am completely lost.
Thank you so much.
Click here to see answer by sdmmadam@yahoo.com(530)

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