Ppt persamaan kuadrat [diyah sri hariyanti 6 c nim 1051500083]
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Ppt persamaan kuadrat [diyah sri hariyanti 6 c nim 1051500083]

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Ppt persamaan kuadrat [diyah sri hariyanti 6 c nim 1051500083] Presentation Transcript

  • 1. Ulasan Menetukan Akar PK Cara Menfaktorkan Dengan cara Rumus ABC Persamaan KUADRAT Diyah Sri Hariyanti - 1051500083
  • 2. Persamaan Kuadratkah Aku? 3x 2 2x 0 12x x 2 2 8 0 2x 1 x 2 ♫ theme by misskkyu ღ ♫ x 1
  • 3. Menetukan Akar Persamaan Kuadrat Cara untuk menentukan akar-akar persamaan kuadrat, diantaranya: 1. Menfaktorkan 2. Menggunakan Rumus abc 3. Melengkapkan kuadrat sempurna 4. Menggambarkan sketsa grafik fungsi f ( x) ax 2 ♫ theme by misskkyu ღ ♫ bx c
  • 4. Cara Menfaktorkan Jika p ∙ q ∈ R dan p ∙ q = 0 maka p = 0 atau q=0 Contoh soal 1: x2 4x 3 0 x2 4 0 1). 2). ( x 2)(x 2) 0 ( x 1)(x 3) 0 x 2 0 atau x 2 0 x 1 0 atau x 3 0 2 x 2 atau x x 1 atau x 3 HP = {-2,2} HP = {1,3} ♫ theme by misskkyu ღ ♫
  • 5. Cara Menggunakan Rumus abc Rumus persamaan kuadrat (rumus abc) dinyatakan sebagai berikut. ♫ theme by misskkyu ღ ♫
  • 6. Contoh Soal 2 Dengan menggunakan rumus kuadrat , tentukan 2 x 2x 0 himpunan penyelesaian dari Solusi: a = 1, b = 1, c = 0 atau HP = {-2,0} ♫ theme by misskkyu ღ ♫
  • 7. Latihan Soal Tentukanlah himpunan penyelesaian dari persamaan kuadrat dibawah ini: a) 2 + 3 − 28 = 0 Pemfaktoran b) 2 2 − 2 − 4 = 0 c) 2 − 6 + 8 = 0 Rumus abc d) 3 2 + 4 + 6 = 0 PENYELESAIAN ♫ theme by misskkyu ღ ♫
  • 8. Tugas Dirumah .... Buktikan rumus dibawah ini: ♫ theme by misskkyu ღ ♫
  • 9. Sekian dan Selamat Belajar ♫ theme by misskkyu ღ ♫