Habisin poin O-o Terlampir! ​

Jawaban:

✍️Jawab

Tinggi Maksimum :

f ' (x) = 0

3x² – 6x – 9 = 0

3 (x – 3)² = 0

x = 3

f(3) = 3³ – 3(3)² – 9(3) + 5

f(3) = 27 – 27 – 27 + 5

f(3) = -22