Квадратныя ўраўненні 8 клас
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Алена Некало
Used 6+ times
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Калі D>0, то квадратнае ўраўненне мае:
2 карані
1 корань
не мае каранёў
немагчыма вызначыць
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
З дадзеных ураўненняў выбярыце тое, якое не мае каранёў
х2 + 3х + 4 = 0
-х2 + 3х + 4 = 0
х2 - 3х - 4 = 0
-х2 - 3х + 4 = 0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Знайдзіце здабытак каранёў ураўнення 2х2 + 3х - 5 = 0
3
-5
-2,5
2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Колькі каранёў мае квадратнае ўраўненне х2 + 6х + 9 = 0
няма каранёў
вызначыць немагчыма
адзін
два
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Дыскрымінант квадратнага ўраўнення вылічаецца па формуле:
D = b2 - ac
D = a2 +4bc
D = 4ac - b2
D = b2 - 4ac
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рашыце ўраўненне: х2 - 2х - 15 = 0
каранёў няма
5; -3
3; -5
1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Дыскрымінант квадратнага ўраўнення х2 + 5х - 6 = 0 роўны
1
16
49
0
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Рашыце ўраўненне 5х2 - 11х + 2 = 0, у адказе ўкажыце суму каранёў
0,4
4
1,8
2,2
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Знайдзіце найбольшы корань ўраўнення -х2 - 5х + 14 = 0
2
7
38
няма каранёў
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