If f (x) = x^2 - 4 and g (x) = x^2 + 2 x ,

(b). (f-g) (x)

I think i know the 1st 2 steps:

f (x) - g (x)

x^2-4 - x^2+2x

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What is 12-2x evaluated for = - 8

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A state lottery involves the random selection of six different numbers between 1 and 27. If you select one six number combination, what is the probability that it will be the winning combination?