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MOCK WARS 2K7 SIGNUP THREAD
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Tropical
Captain Bukakke
Join Date: Feb 2003
Location: Hong Kong
Feb 1st, 2007, 12:23 PM
Quote:
Originally Posted by
CaptainBubba
if 10(x^2+2xy+y^2)/2=5 and x+y=z then find z.
(x^2+2xy+y^2) = (x+y)^2
10((x+y)^2)/2 = 5(x+y)^2 = 5
(x+y)^2 = 1
let u = (x+y)
u^2 = 1
u = 1
z = 1
faggots
actually you're only half right
z= 1 or -1
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