Разность квадратов

Разность квадратов

7th Grade

20 Qs

quiz-placeholder

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Разность квадратов

Разность квадратов

Assessment

Quiz

Mathematics

7th Grade

Hard

Created by

Дарья Щепалова

Used 6+ times

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20 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

Разложите на множители  4х294х^2-9  
ответ набирайте в английской раскладке клавиатуры

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Какая из указанных формул имеет название "разность квадратов"?

a2 + b2

(a - b)2

a3 - b3

b2 - a2

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Укажите правильное раскрытие скобок в выражении (3b+5)(5-3b).

6b + 10

9b2 - 25

9b2 - 30b + 25

25 - 9b2

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Разложите на множители 49a2 - 25.

(7a - 5)2

(7a + 5)2

(5 + 7a)(7a - 5)

(7a - 5)(-7a + 5)

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Какой из данных двучленов можно разложить на множители, применяя формулу разности квадратов?

- а² - b²

4а² + b²

а² - 4b²

4b² + а²

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Упростите выражение (2х – у)(2х + у)

2 - у

у2 - 8ху + 4у2

2 - у2

2 + у2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Упрости выражение  (12х 35у)(12х+35у)\left(\frac{1}{2}х\ -\frac{3}{5}у\right)\left(\frac{1}{2}х+\frac{3}{5}у\right)  

 14х2 610у2\frac{1}{4}х^2\ -\frac{6}{10}у^2  

 14х2925у2\frac{1}{4}х^2-\frac{9}{25}у^2  

 12х235у2\frac{1}{2}х^2-\frac{3}{5}у^2  

 14х925у\frac{1}{4}х-\frac{9}{25}у  

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