
Формулы сокращенного умножения
Quiz
•
Mathematics
•
7th Grade
•
Medium
Олжас Исмагул
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10 questions
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1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Что такое формула разности квадратов?
a^2 - b^2 = (a - b)(a + b)
a^2 + b^2 = (a - b)(a + b)
(a - b)^2 = a^2 - b^2
a^2 - b^2 = a^2 + b^2
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Приведите пример применения формулы суммы квадратов.
1² + 2² = 3.
5² + 12² = 144.
6² + 8² = 100.
Пример: 3² + 4² = 25.
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Как выглядит квадрат суммы?
a² + b²
a² + 2ab + b²
a² - 2ab + b²
(a + b)² - 2ab
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Какова формула квадрат разности?
(a - b)² = a² - 2ab + b²
(a - b)² = a² + 2ab - b²
(a + b)² = a² + 2ab + b²
(a - b)² = a² - b²
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Решите: (a - b)(a + b) = ?
a^2 - b^2
(a + b)^2
a^2 + b^2
(a - b)^2
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Решите: (x + y)² = ?
x² + y²
x² + 2xy + y²
2x + 2y
xy + 1
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Решите: (m - n)² = ?
m² - n²
m² - 2mn + n²
m² + 2mn + n²
(m + n)²
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