Квадратные уравнения 8класс 2чт
Quiz
•
Fun, Mathematics
•
1st - 12th Grade
•
Medium
Андас К
Used 65+ times
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14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Чему равен первый коэффициент данного уравнения: x2 + 6x + 9 = 0?
0
-6
6
1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Укажи неполное квадратное уравнение
5x + 16 + x2 = 0
10x2 + 2x = 1
x2 – 3 = 0
Answer explanation
Если в квадратном уравнении ax2 + bx + c = 0 хотя бы один из коэффициентов b или c равен нулю, то уравнение называется неполным квадратным уравнением.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Найди корни уравнения: 4x2 – 8x = 0
0;1
0;2
1;2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Какая из перечисленных формул является формулой дискриминанта?
D = b2 + 4ac
D = b2 – 4ac
D = –b2 – 4a2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Сколько корней у квадратного уравнения x2 + 6x + 9 = 0 и чему равен его первый коэффициент?
нет корней, 0
три корня, –1
один корень, 1
два корня, 1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Чему равен дискриминант данного уравнения: 2x2 + 4x – 6 = 0?
64
-64
0
8
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Сколько существует корней у полного квадратного уравнения, если дискриминант равен нулю?
нет корней
0
1
0
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