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by onmyown
Fri Jul 20, 2012 11:06 pm
Forum: Intermediate Algebra
Topic: Identifying Square Root Functions
Replies: 1
Views: 1886

Identifying Square Root Functions

Hi, I understand the basic concept of a square root function. I just don't quite get how to identify them. To be more specific, 1) is y=sqrroot of x a square root function? I'm assuming yes. 2) What about y=x^2? is this a square root function? I understand it is the inverse of y=sqrroot of x. But, w...
by onmyown
Thu Aug 04, 2011 12:19 am
Forum: Intermediate Algebra
Topic: Finding domain and range from equation of inverse function
Replies: 1
Views: 964

Finding domain and range from equation of inverse function

Can someone please tell me the domain and range of this equation: http://www.mathway.com/math_image.aspx?p=fSMB02ESMB03-1SMB02eSMB03%28x%29SMB01SMB02RSMB03x+2+1SMB02rSMB03?p=122?p=22 I know the answer. It is: The domain is all values of x that are greater than or equal to -2. The range (y) is all re...
by onmyown
Fri May 13, 2011 9:54 pm
Forum: Intermediate Algebra
Topic: Adding/Subtracting Rational Expressions w Unlike Denominator
Replies: 1
Views: 1702

Adding/Subtracting Rational Expressions w Unlike Denominator

Hi, Can someone please show me how this problem is solved: http://www.mathway.com/math_image.aspx?p=SMB02FSMB037mSMB10mSMB02ESMB032SMB02eSMB03-36SMB02fSMB03-SMB02FSMB033SMB10m-6SMB02fSMB03?p=98?p=42 Here is one of my attempts: First, I found LCD, so I can subtract the two expressions. I did so by mu...
by onmyown
Sat May 07, 2011 8:50 pm
Forum: Intermediate Algebra
Topic: Dividing Rational Expressions
Replies: 1
Views: 818

Dividing Rational Expressions

Hi, can someone please help me understand how this problem is solved? This is the problem: http://www.mathway.com/math_image.aspx?p=SMB02FSMB03xSMB02ESMB032SMB02eSMB03-6x+15SMB10ySMB02fSMB03SMB11SMB02FSMB03x-5SMB105zSMB02fSMB03?p=122?p=42 This is as far as I get (multiply first fraction by reciproca...
by onmyown
Wed Mar 30, 2011 12:18 am
Forum: Beginning Algebra
Topic: converting equation to quadratic equation form
Replies: 8
Views: 3027

Re:

stapel_eliz wrote:I haven't checked your math, but since 343 is not a multiple of 5, clearly this fraction cannot be reduced. :wink:


makes sense

Thanks for bearing with my questions
by onmyown
Tue Mar 29, 2011 5:35 pm
Forum: Beginning Algebra
Topic: converting equation to quadratic equation form
Replies: 8
Views: 3027

Re:

I kind of just forgot how to do deal with the left-hand side. Specifically how to multiply it. To review how to multiply out the square, try this lesson . :wink: Yes, thank you very much. I ended up getting this: y=5x^2/343 - 90x/49 + 402/7 Can I simplify this even more? I know I can divide 402 by ...
by onmyown
Tue Mar 29, 2011 12:55 am
Forum: Beginning Algebra
Topic: converting equation to quadratic equation form
Replies: 8
Views: 3027

Re:

5\left(\frac{x}{7}-9\right)^2=7y+3 Multiply out the left-hand side. Subtract the 3 over to the left-hand side, and divide through by 7. Simplify to get "y=" the quadratic form. :wink: I understand that part. I kind of just forgot how to do deal with the left-hand side. Specificall...
by onmyown
Tue Mar 29, 2011 12:19 am
Forum: Beginning Algebra
Topic: converting equation to quadratic equation form
Replies: 8
Views: 3027

Re: converting equation to quadratic equation form

Hi, can someone please help me help convert this equation into a quadratic equation (i.e. of the form y=ax^2+bx+c) 5(x/7-9)^2=7y+3 How would I go about simplifying the left side, I don't really know how to deal with x/7-9. How do I subtract x/7 and 9. I forgot how to do this :( Just quickly tell me...
by onmyown
Mon Mar 28, 2011 8:47 pm
Forum: Beginning Algebra
Topic: converting equation to quadratic equation form
Replies: 8
Views: 3027

converting equation to quadratic equation form

Hi, can someone please help me help convert this equation into a quadratic equation (i.e. of the form y=ax^2+bx+c) 5(x/7-9)^2=7y+3 How would I go about simplifying the left side, I don't really know how to deal with x/7-9. How do I subtract x/7 and 9. I forgot how to do this :( Just quickly tell me ...
by onmyown
Fri Mar 18, 2011 8:30 pm
Forum: Beginning Algebra
Topic: Factoring polynomials using the distributive property
Replies: 2
Views: 2244

Re:

stapel_eliz wrote:
onmyown wrote:4) Used distributive property:
4x(x-2) + 4y(2-x)
5) Therefore, the solution to the problem is the binomial:
(4x+4y)(x-2)

How did the "2 - x" turn into "x - 2"? Is 5 - 3 the same value as 3 - 5? :wink:

I got the right answer now. Thanks :)

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