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Sagot :
The answer is C. With FOIL, F would be a*a (a^2), O would be a*-4 (-4a), I would be -4*a (-4a), and L would be -4*-4 (16). Both -4a and -4a have the same variable (a) so would combine to make -8a. You would then end up with a^2-8a+16.
a²-8a+16
=(a-4)(a-4)
=a²-4a-4a-[-[4•4]]
=a²-8a+16
---------------
answer =C
=(a-4)(a-4)
=a²-4a-4a-[-[4•4]]
=a²-8a+16
---------------
answer =C
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