Examine the function f(x) = x^2 - 4x. For which value(s) ...

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sub-505

Functions

Examine the function

f(x) = x^2 - 4x

. For which value(s) of x does

f(x) = 12

?
I. 6
II. 4
III. –2

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A

I only

B

II only

C

I and II only

D

I and III only

E

I, II and III

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Explanation

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