angelrenee2000
20.06.2020 •
Mathematics
Please help . I’ll mark you as brainliest if correct !
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Answers on questions: Mathematics
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Ответ:
4 ( a+2)
Step-by-step explanation:
The average rate of change is
(f(a) - f(2))/(a-2)
f(a) = 4a^2 -8
f(2) = 4*2^2 -8 = 4*4 -8 = 16-8 = 8
(4a^2 - 8 - 8))/(a-2)
(4a^2 -16) / (a-2)
Factor the numerator
4( a^2 -4) / (a-2)
4( a-2)(a+2) / (a-2)
Cancel
4 ( a+2)
Ответ:
b=-4
then put it in polynomial and if the answer was 0, then b+4 is its factor
-64+48+4+12=0