# Help needed simplifying the following:

• Mar 31st 2009, 02:39 PM
Starky
Help needed simplifying the following:
So I'm struggling with this problem and wondering if anyone could walk me through it so I can figure out how it works.

y^8 * z^2
y^-3 * z^0.5

Help would be appreciated.

Edit: Just in case the above isn't clear, it's: (y^8 * z^2) / (y^-3 * z^0.5)
• Mar 31st 2009, 05:57 PM
Prove It
Quote:

Originally Posted by Starky
So I'm struggling with this problem and wondering if anyone could walk me through it so I can figure out how it works.

y^8 * z^2
y^-3 * z^0.5

Help would be appreciated.

Edit: Just in case the above isn't clear, it's: (y^8 * z^2) / (y^-3 * z^0.5)

$\displaystyle \frac{y^8z^2}{y^{-3}z^{0.5}} = y^{8 + 3}z^{2 - 0.5}$

$\displaystyle = y^{11}z^{1.5}$

$\displaystyle = y^{11}\sqrt{z^3}$.
• Mar 31st 2009, 06:19 PM
Starky
Thanks very much, I was almost there myself that last step just stumbled me, probably because when I was going through it I changed Z^0.5 for Sqrt(Z) then got myself confused over the rules.

For some reason I was thinking it was more complicated than that.

+rep and thanks for you.