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Квадратные неравенства для 8 класса

Authored by Валентина Сердюк

Mathematics

8th Grade

Used 3+ times

Квадратные неравенства для 8 класса
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20 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Решите неравенство: x^2 - 5x + 6 < 0.

(0, 1)

(2, 3)

(1, 2)

(3, 4)

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Найдите корни уравнения: x^2 - 4 = 0.

2, -2

-1

1

3

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Постройте график функции y = x^2 - 3x + 2.

The graph is a straight line with a slope of -3.

The vertex is at (1, 0) and the parabola opens downwards.

The x-intercepts are at (0, 0) and (3, 0).

The graph of the function y = x^2 - 3x + 2 is a parabola that opens upwards with vertex at (3/2, -1/4), x-intercepts at (1, 0) and (2, 0), and y-intercept at (0, 2).

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Определите знак многочлена x^2 - 2x - 8 на интервале (-∞, -2).

отрицательный

неопределенный

нулевой

положительный

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Решите неравенство: 2x^2 + 3x - 5 ≥ 0.

x ∈ (-2.5, 1)

x ∈ (-∞, -1) ∪ (1, ∞)

x ∈ [0, 1)

x ∈ (-∞, -2.5] ∪ [1, ∞)

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Какой интервал соответствует решению неравенства x^2 - 1 < 0?

(-2, -1)

(-1, 1)

[-1, 1]

(1, 2)

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Проверьте решение неравенства: x^2 - 6x + 9 > 0 для x = 3.

Не выполняется

x = 3 является решением

Неопределено

Выполняется

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