inequalities

If each expression under the square root is greater than or equal to 0, what is ?

a)sqrt(2-x)
b)2x-6+sqrt(2-x)
c)sqrt(2-x)+x-3
d)2x-6+sqrt(x-2)
e)x+sqrt(x-2)

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palvarez: Master | Next Rank: 500 Posts; Posts: 199; Joined: Sat Oct 24, 2009 4:43 pm; Thanked: 22 times; GMAT Score:710

by palvarez » Sat Nov 21, 2009 10:45 am

Incomplete. What do you want to find?

a), b) and c) can have some value only when x <= 2

d) and e) are defined when x >= 2

a > c > b since x <=2

d > e, since x >= 2

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