дискриминант
Quiz
•
Mathematics
•
6th Grade
•
Practice Problem
•
Hard

Юлия Вихрова
Used 142+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Для уравнения х2 +4х -21 = 0 найдите чему равен дискриминант
68
-68
100
92
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Для уравнения -2х2 -4х + 6 = 0 чему равно выражение 2а
2
-4
4
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Для уравнения 2х2 + х - 21 = 0 выражение -b равно
2
-21
-1
1
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
У уравнения 8х2 - 5х + 2 = 0
один корень
два корня
нет корней
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
У уравнения 4х2 - 12х +9 = 0
1 корень
2 корня
нет корней
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
У уравнения х2 + 4х -21 = 0
один корень
два корня
нет корней
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Дискриминант вычисляется по формуле
b - ac
b2 - 4ac
-b2 + 4ac
b2 - ac
8.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Решите уравнение х2 + х - 30 = 0
-6 или 5
6 или -5
12 или -10
-12 или 10
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