Quick question on a simplification of position formula

[skurred]

Homework Statement

I'm having issues simplifying the following position formula.

Homework Equations

http://imgur.com/y1tgG.jpg

The Attempt at a Solution

Its probably something really stupid I'm not realizing but i don't understand how under the square root 127 got to be 127 and not 127^2.

Since in the orig problem when you solve for V^2 you'd end up with

V^2= (127^2)(g)/ ((2)(80.8))
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[tiny-tim]

Welcome to PF!

Hi skurred! Welcome to PF!

(try using the X² tag just above the Reply box )

Yes, you're right … (g/2)(127/v)² = 80.8, so v = 127√(g/(2*80.8))

(is this from a book? )