
Алгебраические дроби
Authored by Наталья Клюшникова
Mathematics
6th - 8th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как умножить алгебраические дроби? Приведите пример.
Example: (8x^3 + 10x^2 + 12x^2 + 15x) / (3x^3 + x^2 + 6x^2 + 2x) = 8x^3 + 22x^2 + 15x
Example: (2x^2 + 3x) * (4x + 5) / (x^2 + 2x) * (3x + 1) = (8x^3 + 10x^2 + 12x^2 + 15x) / (3x^3 + x^2 + 6x^2 + 2x) = (8x^3 + 22x^2 + 15x) / (3x^3 + 7x^2 + 2x)
Example: (2x^2 + 3x) / (x^2 + 2x) = 2x + 3
Example: (4x + 5) / (3x + 1) = 4x + 5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как сложить или вычесть алгебраические дроби? Предоставьте пример.
The correct answer is (4x^2 + 3x - 1)/(x^3 - x)
The correct answer is (3x^2 + 2x - 1)/(x^3 - x)
The correct answer is (6x^2 + 5x - 1)/(x^3 - x)
The correct answer is (5x^2 + 4x - 1)/(x^3 - x)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как упростить алгебраические дроби? Дайте пример.
Пример: (2x^2 + 3x) / (x^2 + 2x) = 2x - 3 / x - 2
Пример: (2x^2 + 3x) / (x^2 + 2x) = 2x + 3 / x - 2
Пример: (2x^2 + 3x) / (x^2 + 2x) = 2x + 3 / x + 2
Пример: (2x^2 + 3x) / (x^2 + 2x) = 2x - 3 / x + 2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как делить алгебраические дроби? Предоставьте пример.
(3x^2 + 5x) / (2x) - (x^2 + 3) / (4)
(3x^2 + 5x) / (2x) + (x^2 + 3) / (4)
Example: (3x^2 + 5x) / (2x) ÷ (x^2 + 3) / (4)
(3x^2 + 5x) / (2x) * (x^2 + 3) / (4)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Решите уравнение: (3x + 2) / (x^2 - 1) = 5 / (x - 1)
x = -1
x = 4
x = 2
x = 3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Упростите выражение: (2x^2 + 3x - 5) / (x^2 - 4)
(2x - 1) / (x + 2)
(2x + 3) / (x^2 - 4)
(2x + 1) / (x - 2)
(2x - 2) / (x + 2)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сложите дроби: (x^2 + 3x + 2) / (x + 2) + (2x - 1) / (x + 1)
(x^2 + 5x + 2) / (x^2 + 3x + 2)
(x^2 + 5x + 2) / (x + 1)
(x^2 + 3x + 2) / (x + 1)
(2x - 1) / (x + 2)
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