
Persamaan Kuadrat
Presentation
•
Mathematics
•
9th Grade
•
Hard
Asminingsih Yusuf
FREE Resource
3 Slides • 0 Questions
1
Persamaan Kuadrat
by Asminingsih Yusuf
2
Persamaan Kuadrat
1. Bentuk Umum Persamaan Kuadrat : ax2 + bx + c = 0
2. Rumus Diskriminan : D = b2 – 4ac
3. Banyak akar yang dimiliki suatu persamaan kuadrat dapat dilihat dari nilai diskriminannya :
a. Persamaan kuadrat mempunyai dua akar real jika D 0
b. Persamaan kuadrat mempunyai satu akar real jika D = 0. Satu akar real juga sering disebut dua akar real ke mbar
c. Persamaan kuadrat mempunyai dua akar real jika D < 0
3
4. Penyelesaian persamaan kuadrat terbagi atas 3 yaitu :
a. Metode Pemfaktoran
- ax + ay = a(x+y)
-
- X2 – y2 = (x + y) (x – y)
- ax2 + bx +c dengan a = 1 dan c > 0
x2 + (p +q)x + pq = (x + p) (x +q)
x2 - (p +q)x + pq = (x - p) (x - q)
Persamaan Kuadrat
by Asminingsih Yusuf
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