Dikeitahui f(x)=|x2-2x-8|. ,Nilai f(-1) + f(1) +f(2) adalah​

Jawab:

Penjelasan dengan langkah-langkah:

f(x)= |x² – 2x – 8|

f(-1) = |1 – 2(-1) – 8|

f(-1) = |1 + 2 – 8|

f(-1) = |-5|

f(-1) = 5

f(1) = |1 – 2(1) – 8|

f(1) = |1 – 2 – 8|

f(1) = |-9|

f(1) = 9

f(2) = |2² – 2(2) – 8|

f(2) = |4 – 4 – 8|

f(2) = |-8|

f(2) = 8

f(-1) + f(1) + f(2)

= 5 + 9 + 8

= 22