KELAS 9 PERSAMAAN KUADRAT
Quiz
•
Mathematics
•
9th Grade
•
Hard
ADE SUMARNI
Used 28+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Akar-akar persamaan kuadrat x2 + 4x – 45 = 0 adalah …
x1 = – 9 atau x2 = – 5
x1 = – 9 atau x2 = 5
x1 = 9 atau x2 = – 5
x1 = 9 atau x2 = 5
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Akar-akar persamaan kuadrat x2 – 15x + 50 = 0 adalah …
x1 = 5 atau x2 = 10
x1 = 5 atau x2 = - 10
x1 = - 5 atau x2 = 10
x1 = - 5 atau x2 = - 10
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui persamaan kuadrat x2 + 2x – 48 = 0 dengan akar-akar p dan q. Jika p<q, nilai q – p = …
– 14
– 8
8
14
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui persamaan kuadrat 3x2 + 16x + 5 = 0 akar-akar persamaan kuadrat tersebut adalah …
x1 = 1 atau x2 = – 5
x1 = 1/3 atau x2 = – 5
x1 = -1/3 atau x2 = – 5
x1 = – 3 atau x2 = 1/5
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
1. 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)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Himpunan penyelesaian persamaan 2x2 – 7x – 3 = 0 adalah …
{(7-√73)/4 , (7+ √73)/4 }
{(7-√67)/3 , (7+ √67)/3 }
{(6-√52)/2 , (6+ √52)/2 }
{(6-√52)/2 , (6+ √50)/2 }
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