Posted by **lyne** on Thursday, October 29, 2009 at 9:40pm.

okay i need to find the domain and range of this

z(x) = ãx^2 - 100

(everything is in the square root)

so i think i found the domain i got [-10,10]

but i don't know about the range

i solved for x and got stuck here

x=ãy^2 + 100

helppp pleaseee

:)

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