Use factoring to solve the equation for real values of the variables

z^3/2 - 2^1/2 = 0

I think i'm making it harder then it realy is please help

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- October 2nd 2008, 12:06 PMciviliamAnother HW Question Polynomial and Radical Equations
Use factoring to solve the equation for real values of the variables

z^3/2 - 2^1/2 = 0

I think i'm making it harder then it realy is please help - October 2nd 2008, 12:42 PMSean12345
Hi again civiliam,

We have . Now this leads to . Notice that to get we need to raise to the power of since we know that . Hence raising both sides of the equation to the power yields .

Hope this helps. - October 2nd 2008, 12:44 PMicemanfan
This is what I would do:

- October 2nd 2008, 12:47 PMciviliam
sorry why 2/3?

- October 2nd 2008, 12:49 PMicemanfan
- October 2nd 2008, 12:50 PMciviliam
ahh I c thank you much!

- October 2nd 2008, 12:54 PMciviliam
so i wrote the problem out wrong would I still work it out the same way if the 2^1/2 was z^1/2?

z^3/2 - z^1/2 = 0 - October 2nd 2008, 12:57 PMicemanfan
Now you can factor out .

Beginning with :

z = 0 or 1.

So the problem changes significantly. - October 2nd 2008, 01:02 PMciviliam
wow that was simple odd how minor changes to a problem can throw me off so easily thanks again