I'm having problems understanding the derivation of fraction exponents like this for example:
Obviously I have more complicated problems than this to evaluate, but a basic explanation would be helpful.
The book I'm using for some reason skips talking about this....
The example I'm looking at on my homework is this:
4 over the 3rd root of z, minus z to the 4th root.
Hello, I'm back.
After looking and working on this equation,
I've come to the pre-simplified answer of:
And when I look the answer up on WRA, it gives the simplified answer of:
and I'm not seeing how this simplification is working.
Can anyone help explain?
Now, how do we get this denominator in both fractions? By multiplying the numerator and denominator of the left fraction by 4 (because ) and by multiplying the numerator and denominator of the right fraction by (because, again, ).