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More Algebra questions

Yes, but I like to check my work. I thought the exponents were suppoosed to be added like with the negative 1/2, or is that only done with a negative?
 
Originally posted by: Zap Brannigan
Yes, but I like to check my work. I thought the exponents were suppoosed to be added like with the negative 1/2, or is that only done with a negative?
Click to expand...

(a^m)^n = a^(m*n)

you dont add the exponents in this case
 
Oh wait a second I think I read it wrong. No wonder. It is 125x^-3/2 right? Ok I see how I got confused, this has to be the answer.

Here comes the next problem in a sec!
 
Originally posted by: Zap Brannigan
Ah, so it was'nt because it was a negative, it was becasue it was a 5x rather than an x?
Click to expand...

ok i assumed your original problem was this:

(5*x^-1/2*y^1/3*z^4/5)^3

so basically you raise each factor (5, x^-1/2 etc) to the 3rd power so you get 5^3*(x^-1/2)^3*...
 
Yup!

To get a positive exponent all I do is flip them if I remember correctly right? For example the negative 9/20 would then be a postive 20/9?
 
Originally posted by: Zap Brannigan
Yup!

To get a positive exponent all I do is flip them if I remember correctly right? For example the negative 9/20 would then be a postive 20/9?
Click to expand...

you don't flip the exponent if that's what you mean, but you can flip the base

eg

(5/6)^-6 = (6/5)^6
 
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