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latihan kelas 9

Authored by FRISKILIA MAHARANI

Mathematics

9th Grade - University

latihan kelas 9
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13 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 5 pts

2.

MULTIPLE CHOICE QUESTION

15 mins • 5 pts

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Diketahui persamaan kuadrat 3x2 - 8x + 1 = 0. Nilai diskriminan persamaan tersebut adalah ....

76

64

54

52

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Persamaan berikut yang mempunyai dua akar real berbeda adalah ...

6x2 + 8x + 5 = 0

3x2 + x + 5 = 0

2x2 + 3x - 5 = 0

-x2 + 6x - 9 = 0

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Hasil x1+x2 dan x1.x2 secara berturut-turut dari persamaan kuadrat x2 - 5x - 36 adalah ...

-5 dan -36

5 dan 36

-5 dan 36

5 dan -36

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Perhatikan pernyataan berikut.

(i) 4x2 – 9 = (2x + 3)(2x – 3 )

(ii) 2x2 + x – 3 = (2x – 3)(x + 1)

(iii) x2 + x – 6 = (x + 3)(x – 2)

(iv) x2 + 4x – 5 = (x – 5)(x + 1)

Pernyataan yang benar adalah …

(i) dan (ii)

(i) dan (iii)

(ii) dan (iii)

(ii) dan (iv)

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Koordinat titik puncak grafik fungsi y = 4x2 + 12x + 6 adalah ....

(1½ , 3)

(1½ , -3)

(-1½ , 3)

(-1½ , -3)

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