Persamaan dan Fungsi Kuadrat
Quiz
•
Mathematics
•
10th Grade
•
Practice Problem
•
Hard
saifudin sai
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika salah satu akar persamaan kuadrat ax2 + 5x - 12 = 0 adalah 2, maka ....
a = 1/2 , akar yang lain −12
a = 1/2 , akar yang lain 12
a = 1/3 , akar yang lain −12
a = 2/3 , akar yang lain 10
a = 2/3 , akar yang lain 12
2.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Akar-akar persamaan kuadrat 3x2 - 5x + 2 = 0 adalah x1 dan x2, dengan x1 > x2. Nilai x1 - x2 adalah ....
5/2
1/2
1/3
3/5
1
3.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika m dan n adalah akar-akar dari persamaan kuadrat x2 + 5x + 3 = 0, maka ((1+m)/(1-m)) + ((1 + n)/(1-n)) = ....
− 9/2
− 4/9
− 3/5
4/9
5/9
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Persamaan kuadrat x2 - px + p = 0 mempunyai akar kembar untuk nilai p sama dengan ....
−4
−2
−1
2
4
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Panjang sisi segitiga siku-siku berturut-turut adalah x cm, (x + 2) cm, dan (x + 4) cm. Keliling dan luas segitiga tersebut masing-masing adalah ....
12 cm dan 4 cm2
12 cm dan 8 cm2
24 cm dan 12 cm2
24 cm dan 16 cm2
24 cm dan 24 cm2
6.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Suatu fungsi kuadrat dinyatakan dalam bentuk f (x) = 2x2 - 7x - 5. Di antara titik A(2, −11), B(−1, 0), dan C(−4, 55), yang dilalui oleh grafik f(x) tersebut adalah titik ....
A dan B
A dan C
B dan C
A saja
A, B, dan C
7.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Grafik fungsi y = ax2 + bx + c tampak seperti pada gambar berikut. Apabila diskriminan dinyatakan sebagai D, maka pernyataan yang benar adalah ....
a > 0; c > 0; D > 0
a > 0; c < 0; D > 0
a < 0; c > 0; D < 0
a < 0; c < 0; D < 0
a > 0; c = 0; D = 0
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