Need Help On Math Homework ASAP!

[extremehobbyist]

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[sprinklerdudes]

duh whaaa?

 

[extremehobbyist]

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[Eternal]

2xsqaured-3x over 4x-6?

 

[aerius007]

6x^3-9x^2/12x^2-18x

 

[extremehobbyist]

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[chipcount]

look in the back of the book lol

 

[extremehobbyist]

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[sprinklerdudes]

post the problem , we will try to help

 

[Maximus]

answer =x/2

 

[extremehobbyist]

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[extremehobbyist]

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[Maximus]

First, factor out the gcf on top. The gcf is 3x^2 on top.
Thus, you get 3x^2(2x-3) on top. On the denominator, you factor out 6x. Thus, you get 6x(2x-3) on the bottom. Both 2x-3 on top and bottom cancel each other so you are left with
3x^2/6x. 3/6 reduces to 1/2 and x^2/x=x. The answer is x/2.

 

[Tank102a]

Ohh goody math is my favorite. Cramster.com is pretty good, if you sign up you can post problems and somebody will help you solve it.

need help with any more?

 

[Maximus]

Looks like you are in Algebra 1.

 

[macawmagic]

wow...that was so many math classes ago! I wish I had the time to help you, but I've got a hugggggge project due fri that I'm soooo far behind on.

advice. You gotta learn how to cancel everything out...aka aka if theres x^3 on top and x^2 on the bottom...then ur left with x on top. same goes for the number.

wait till you get to the problems like this that use the quadratic function in order to solve them =)

 

[extremehobbyist]

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[Tank102a]

ohh you can punch any math question into wolframalpha.com and get a answer. It works for advanced stuff too like laplace transforms exc.

 

[Maximus]

16-x squared over x cubed - 2x squared - 8x

-(x+4)/x(x+2)

 

[Maximus]

ok that helps me out but on this one 16-x squared over x cubed - 2x squared - 8x how do you factor them out?

16-x^2= -1(x^2-16)= -1(x-4)(x+4)


x^3-2x^2-8x= x(x^2-2x-8)= x(x-4)(x+2)

Thus, you get -1(x-4)(x+4)/x(x-4)(x-2). x-4's cancel out on top and bottom, so you are left with -(x+4)/x(x+2)