Kedudukan grafik fungsi kuadrat fx x 2 3x 4 terhadap

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22. Kedudukan grafik fungsi kuadrat f(x) = x 2 + 3x + 4 terhadap garis y = 3x + 4 adalah ...... KUMPULAN SOAL SKL UN 2011 INDIKATOR 5 Kemampuan mengerjakan soal akan terus meningkat jika terus berlatih mengerjakan ulang soal yang lalu 26
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LATIH UN Prog. IPA Edisi 2011 Menggunakan rumus jumlah dan hasil kali akar-akar persamaan kuadrat untuk menentukan unsur yang belum diketahui dari persamaan kuadrat. 1. Akar-akar persamaan kuadrat 2x 2 + m x + 16 = 0 adalah dan . Jika = 2 dan , positif maka nilai m = … a. –12 c. 6 e. 12 b. –6 d. 8 2. Akar-akar persamaan kuadrat x 2 + ( a – 1)x + 2 = 0 adalah α dan . Jika α = 2 dan a > 0 maka nilai a = … a. 2 c. 4 e. 8 b. 3 d. 6 3. Persamaan 2x 2 + qx + (q – 1) = 0 mempunyai akar – akar x 1 dan x 2 . Jika x 1 2 + x 2 2 = 4, maka nilai q = …. a. – 6 dan 2 d. – 3 dan 5 b. – 6 dan – 2 e. – 2 dan 6 c. – 4 dan 4 4. Persamaan kuadrat x 2 – 7x + 5k + 2 = 0 mempunyai akar-akar x 1 dan x 2 , jika x 1 – x 2 = 1, maka nilai k = ... a. 1 c. 3 e. 5 b. 2 d. 4
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