Network
a. y= 2x²- 5x.
b. y = 3x² + 12x.
c. y= -8x² - 16x - 1.
Jawaban:
a). y= 2x²- 5x
a = 2
b = -5
xe = -b/2a
xe = -(-5)/2.2
xe = 5/4
= 1 1/4
b. y = 3x² + 12x
a = 3
b = 12
xe = -b/2a
xe = -12/2.3
xe = -12/6
xe = -2
Baca Juga: KUNCI JAWABAN Matematika Ayo Kita Berlatih 3.2 Kelas 8 Semester 1 Halaman 102, 103 Terlengkap 2022
c. y = -8x² - 16x - 1
a = -8
b = -16
xe = -b/2a
xe = -(-16)/2.(-8)
xe = 16/-16
xe = -1
2. Tentukan nilai optimum fungsi berikut ini
