
Квадратные неравенства
Authored by Наталья Фурсова
Mathematics
1st Grade
Used 19+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чему не может быть равен коэффициент а в квадратном неравенстве
ах^2+ bx+c>0
1
-5
100500
0
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ветви параболы направлены вверх, если а=
-17
1
67
-1
3.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
Неравенство, знак в котором > или < считается (каким?)
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
нет корней
все действительные числа
х=-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
0;1;2;3
1;4
нет целых корней
-1; 0; 1; 2; 3; 4
Answer explanation
Ветви параболы направлены вверх. Нас устроит промежуток [-1; 4]. Выписываем целые числа. Учитываем концы промежутка
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
не имеет корней
корнями являются все действительные х
(-5;7)
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