Diketahui:
Jika f(x) = 5x - 3,
(f(x))² – 6f(x) = -9
Ditanya :
jumlah semua x
Pembahasan :
(5x-3)²- 6(5x-3) = -9
25x²-30x+9 -30x+18 = -9
25x²-60x +36 = 0
(5x-6)² = 0
5x - 6 = 0
5x = 6
x = 6/5
x = 1⅕
pelajari lebih lanjut:
soal serupa:
brainly.co.id/tugas/7771168
======================================
Detail jawaban:
mapel : matematika
kelas : 8
materi :fungsi
kata kunci : f(x)
kode soal :2
kode : 8.2.2
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Diketahui:
Jika f(x) = 5x - 3,
(f(x))² – 6f(x) = -9
Ditanya :
jumlah semua x
Pembahasan :
(f(x))² – 6f(x) = -9
(5x-3)²- 6(5x-3) = -9
25x²-30x+9 -30x+18 = -9
25x²-60x +36 = 0
(5x-6)² = 0
5x - 6 = 0
5x = 6
x = 6/5
x = 1⅕
pelajari lebih lanjut:
soal serupa:
brainly.co.id/tugas/7771168
======================================
Detail jawaban:
mapel : matematika
kelas : 8
materi :fungsi
kata kunci : f(x)
kode soal :2
kode : 8.2.2