Posted by **Secretai** on Thursday, November 17, 2011 at 11:00am.

1. Which expression belongs in the space?

|---------------

x-2 |x^2 + 7x - 18

-(x^2-2x)

--------

18

a.5x - 18

b.5x + 18

c.9x - 18

d. 9x + 18

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