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

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Question 32337: solve for x. (answer I got was either Xsquared-2x-6x+12 or zero?)

...____4____...= 1 -..._1_
.... X2+8X+12........... X+6
Click here to see answer by mukhopadhyay(490)

Question 32627: hey,can you help me solve this polynomial using factoring.... i have tried numerous times and it doesnt work out right.....
6Xsquared+2XY+Ysquared+3XY
Click here to see answer by josmiceli(3003)

Question 32626: 12c - 8d - 15rc + 10rd Please help me Factor this by Grouping
Click here to see answer by josmiceli(3003)

Question 32628: hey once again i tried this problem a few times and the answer doesnt match what the teacher gave me as the answer.....
factor perfect-square trinomials and differences of squares.....
X^2Y-4Y+X^2-4
=y(x^2-4)+(x^2-4)
=(x^2-4)(y+1)
=(x-2)(x+2)(y+1)
Cheers

Click here to see answer by stanbon(26259)

Question 32630: 3a^2 - 13a + 12 Please help me factor this.
Click here to see answer by stanbon(26259)

Question 32629: factor perfect-square trinomials and differences of squares.....
6Xsquared+2XY+Ysquared+3XY
Click here to see answer by checkley71(8405)

Question 32656: (x^3-3x^2-108x)/(x-12)
Click here to see answer by venugopalramana(3286)

Question 32704: 12/21x - 4/ 21x
I have 8/21x as the answer, is this correct?
Click here to see answer by Nate(3495)

Question 32703: x/x = 2 - 1/x
Click here to see answer by mukhopadhyay(490)

Question 32702: x+1/ 2 = x+2/ 3
Click here to see answer by mukhopadhyay(490)

Question 32686: 12n^2+8n=0
Click here to see answer by mukhopadhyay(490)

Question 32670: 7/x+1 = 5/x-3
What is x?
Click here to see answer by mukhopadhyay(490)

Question 32671: 6/x + x/2 = 4
What is x?
Click here to see answer by mukhopadhyay(490)

Question 32669: x/3 - 1/3 = 2/x
What is x?
Click here to see answer by mukhopadhyay(490)

Question 32700: x/5
_______
7/ x+5
Click here to see answer by mukhopadhyay(490)

Question 32699: 9 + 3/x
________
x/4 + 1/12
Click here to see answer by mukhopadhyay(490)

Question 32696: 7
___
z^2
minus

9
____
Z
Click here to see answer by mukhopadhyay(490)

Question 32695: 3
___
y^2-3y+2
Plus
7
____
y^2-1
Click here to see answer by mukhopadhyay(490)

Question 32727This question is from textbook algebra

: Solve the problem

Mark and Rachel both work for Smith Landscaping Company. Mark can finish a planting job in 2 hours, while it takes Rachel 4 hours to finish the same job. If mark abd Rachel will work together on the job, and the cost of labor is $45 per housr, what should the labor estimate be? This question is from textbook algebra

Click here to see answer by mukhopadhyay(490)

Question 32688: a^2-ab+10a-10b
______________
a+10

Click here to see answer by mukhopadhyay(490)

Question 32693: z^2+10z+24
___________
z^2+15z=54 divided by

z^2+4z
______
z^2+2z-63
Click here to see answer by mukhopadhyay(490)

Question 32694: Find the LCD
r-1
______
r^2+6r+5 ,
2
___
r^2+r
Click here to see answer by benni1013(141)

Question 32691: 4y
____ * multiplyed by
8y+4

12y+6
_____
7
Click here to see answer by benni1013(141)

Question 32687: 15K^3
______
5K Simplfy I thought the answer is 3k^3
____
5k
Click here to see answer by benni1013(141)

Question 32689: 5-m
____
m-5
I put -1 is this correct???
Click here to see answer by benni1013(141)

Question 32802This question is from textbook Heath Algebra 1 An Integrated Approach
: ((x^2-6x+8)/(x^2-2x))/(3x-12)
How do you know when to simplify and divide the polynomials, and when to do long division? And the, which do you do first, the sipmlifying or the dividing? Truthfully I think i need help with the over all Algebra subject, because i'm doing so well in that class.
Thank you,
J.A.This question is from textbook Heath Algebra 1 An Integrated Approach

Click here to see answer by askmemath(368)

Question 32771: By considering factors, find the smallest value of x such that 120x will be a perfect square.
Click here to see answer by lolalove(1)

Question 32828: Find the Lowest common demonator or the LCD?????
r-1 2
_____ , _______
r^2+6r+5 r^2+r
Click here to see answer by stanbon(26259)

Question 30910: I need an explanation on how to properly factor this polynomial...
4a^2+12ab+9b^2-25c^2
I have tried grouping and didnt reach the solution. Thanks in advance for the help!
Click here to see answer by stanbon(26259)

Question 32799This question is from textbook Algebra 1
: How does the problem (3x to the fourth power y to the third power)(4x to the fourth power y) work.This question is from textbook Algebra 1

Click here to see answer by longjonsilver(2297)

Question 32876: How do you factor the expression 7n^5 + 7n^4 - 3n^2 - 6n - 3?
Click here to see answer by sarah_adam(201)

Question 32888: Ima Skeepro want to store her skis and winter supplies in a closet. The closet is 0.6 deep, 1.5 wide and 2.4m tall.
ima wants to cover the left right and back side of closet with wallpaper. if wall paper sells for $4.50 per square meter how much will it cost?explain your answer
Click here to see answer by checkley71(8405)

Question 32795: (X-1)(X^2+2x-6)
Click here to see answer by ikdeep(182)

Question 32797: 12x^3y^2z - 24x^2y^3z + 16x^2y^3z^3
Factor the polynomial
Click here to see answer by ikdeep(182)

Question 32915: I worked the following problem and came up with -216a^2.
Simplify: (-2a^4)^3(3a^-5)^2

I worked the following problem and came up with 3(a^2-5a^2-14).
Factor: 3a^2-15a^2-42
Click here to see answer by josmiceli(3003)

Question 32925This question is from textbook Algebra

: Solve the problem.

Jan can run 5 miles per hour on level ground on a still day. One windy day, he runs 10 miles with the wind, and in the same amount of time runs 6 miles against the wind. What is the rate of the wind?This question is from textbook Algebra

Click here to see answer by checkley71(8405)

Question 32927: 6y^2-41y-7
( 6y-1)(y-7)

Click here to see answer by checkley71(8405)

Question 32690: 4y 12y+6
____ * ______
8y+4 7
Click here to see answer by checkley71(8405)

Question 32965: ima skeepro wants to store her skies and winter supplies in a closet. the closet is 0.6 m deep, 1.5 m wide and 2.4 m tall.
ima's skis are 2.8 meters long. can these skies fit in the closet? explain your reasoning

Click here to see answer by stanbon(26259)

Question 32923This question is from textbook algebra

: Solve the Problem...

Five divided by the difference of a number and 7 equals the quotient of 10 and the sum of the number and 6. Find the number.This question is from textbook algebra

Click here to see answer by xcentaur(357)

Question 33091: Hello, sorry to be a bother!!! But I need help a usual!! Here are my problems!!
1. Simplify the rational expression:
x^2-3x-10
_________
x^2-x-20
2. Divide:
2x^2+5x-12 / 2x^2-7x+6
_______________________
9x^2-16 / 3x^2-x-4
3. Simplify:
square root[144x^10y^12z^18]
4. Perform the indicated operations:
square root[50]+2 square root[32]- 2 square root[8]
5. Multiply:
(5 square root[2]+3)(square root[2]-2 square root[3])
6. Rationalize the denominator:
2
______________
square root[6]- square root[5]
I spelled out the square root because there is nothing on key board for symbol of the square root check. I will appreciate any help that I can get. Thanks!!!
Click here to see answer by sarah_adam(201)

Question 33135This question is from textbook college algebra

: I can not for the life of me remember how to do this. I have tried numerous ways and still have not come to the correct answer.
2x to the 4-3x to the 3+x+1 is divided by 2x to the 2+x+1This question is from textbook college algebra

Click here to see answer by mukhopadhyay(490)

Question 33181: can you help me solve this?
5P-15P^2=0
Click here to see answer by sarah_adam(201)

Question 33181: can you help me solve this?
5P-15P^2=0
Click here to see answer by priya(51)

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