Factor this expression: 3x ^ -1/2 + 3/2x^ 1/2

L

LynaEllrodt

New member
Joined
Sep 2, 2006
Messages
6
Factor this expression and express answer so that only positive exponents occur.

3x ^ -1/2 + 3/2x^ 1/2

I have been working on this problem for an hour and can not come up with the right answer. Please help.. Thank you
 
Re: Factor this expression.

LynaEllrodt said:
Factor this expression and express answer so that only positive exponents occur.
3x ^ -1/2 + 3/2x^ 1/2
I have been working on this problem for an hour and can not come up with the right answer. Please help.. Thank you
Click to expand...
Rule: a^(-x) = 1 / a^x

So 3x^(-1/2) = 3 / x^(1/2)

Can you carry on?

You should end up with 9 / (2x^(1/2))
 
The answer to the problem is 3(x+2) / 2x ^ 1/2 .... I did switch the - exponent.. but I'm not coming out with the answer..
 
LynaEllrodt said:
The answer to the problem is 3(x+2) / 2x ^ 1/2 .... I did switch the - exponent.. but I'm not coming out with the answer..
Click to expand...
Lyna, that is NOT equal to your original expression: 3x ^ -1/2 + 3/2x^ 1/2

Either your book gives wrong answer, or there is something wrong
with your original expression: is it typed properly ?
 
You must log in or register to reply here.
Top