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Verified answer
Materi : Persamaan KuadratBahasan : Mencari Himpunan Penyelesaian dari PK
Jawaban : x = 4 atau x = 3
Langkah - langkah :
x² + 12 = 7x
⇔ x² - 7x + 12 = 0
⇒ Faktorisasi
⇒ (x - 4) (x - 3) = 0
x = 4 atau x = 3
Verified answer
Mapel : MatematikaKelas : VIII SMP
Materi : Persamaan kuadrat
Pembahasan :
x² + 12 = 7x
x² - 7x + 12 = 0
x² - 3x - 4x + 12 = 0
x(x - 3) - 4(x - 3) = 0
(x - 4)(x - 3) = 0
x = 4
x = 3
Hp : {3 , 4}