Jawab:
Penjelasan dengan langkah-langkah:
2x² - 14x + 20 = 0
dibagi 2
x² - 7x + 10 = 0
x² - 7x = -10
x² - 7x + (7/2)² = -10 + (7/2)²
(x - 7/2)² = -40/4 + 49/4
x - 7/2 = √(9/4)
x = 7/2 ± 3/2
x1 = 7/2 + 3/2
x1 = 10/2
x1 = 5
x2 = 7/2 - 3/2
x2 = 4/2
x2 = 2
Maka, x1 = 5 atau x2 = 2
Detail jawaban
Kelas 8
Mapel 2 - Matematika
Bab 6 - Persamaan Kuadrat
Kode Kategorisasi : 8.2.6
#backtoschool2019
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Jawab:
Penjelasan dengan langkah-langkah:
2x² - 14x + 20 = 0
dibagi 2
x² - 7x + 10 = 0
x² - 7x = -10
x² - 7x + (7/2)² = -10 + (7/2)²
(x - 7/2)² = -40/4 + 49/4
x - 7/2 = √(9/4)
x = 7/2 ± 3/2
x1 = 7/2 + 3/2
x1 = 10/2
x1 = 5
x2 = 7/2 - 3/2
x2 = 4/2
x2 = 2
Maka, x1 = 5 atau x2 = 2
Detail jawaban
Kelas 8
Mapel 2 - Matematika
Bab 6 - Persamaan Kuadrat
Kode Kategorisasi : 8.2.6
#backtoschool2019