
Формулы разности и квадраты выражений

Quiz
•
Mathematics
•
7th Grade
•
Medium

Ulzhan Kaiyrzhan
Used 1+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что такое формула разности квадратов?
(a - b)^2 = a^2 - b^2
a^2 - b^2 = (a - b)(a + b)
a^2 - b^2 = a^2 + b^2
a^2 + b^2 = (a - b)(a + b)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как выглядит формула разности квадратов двух выражений?
(a - b)(a + b)
(a + b)^2
(a - b)^2
a^2 - b^2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Приведите пример применения формулы разности квадратов.
7^2 - 5^2 = (7 - 5)(7 + 5) = 24.
6^2 - 1^2 = (6 - 1)(6 + 1) = 30.
Пример: 5^2 - 3^2 = (5 - 3)(5 + 3) = 16.
4^2 - 2^2 = (4 - 2)(4 + 2) = 12.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что такое квадрат суммы двух выражений?
(a + b)^2
a^2 + b^2
a^2 + 2ab + b^2
a^2 - 2ab + b^2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какова формула квадрата суммы двух выражений?
(a + b)² = 2a² + 2b²
(a + b)² = a² + 2ab + b²
(a + b)² = a² - 2ab + b²
(a + b)² = a² + b²
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Приведите пример применения формулы квадрата суммы.
(a + b)² = a² - 2ab + b²
(a + b)² = a² + b²
(a + b)² = 2a² + 2b²
(a + b)² = a² + 2ab + b²
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что такое квадрат разности двух выражений?
(a - b)² = a² - b²
(a - b)² = a² - 2b + b²
(a + b)² = a² + 2ab + b²
(a - b)² = a² - 2ab + b²
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