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dsp73
3 years ago
9

If (x + 4) is a factor of f(x), which of the following must be true?

Mathematics
1 answer:
GalinKa [24]3 years ago
8 0
F(-4) = 0

Here, we replace x with -4. In doing so, we see that (-4+4) is indeed 0, making this the correct answer.

The next two choices are incorrect since only -4 is a root of f(x), as explained above (a root occurs when the function equals zero when plugging in that “root”).

The last answer is incorrect since plugging in 4 will get f(4)=8.
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