Формулы сокращенного умножения

Формулы сокращенного умножения

7th Grade

10 Qs

quiz-placeholder

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Формулы сокращенного умножения

Формулы сокращенного умножения

Assessment

Quiz

Mathematics

7th Grade

Medium

Created by

Олжас Исмагул

Used 1+ times

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10 questions

Show all answers

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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