Разность квадратов

Разность квадратов

7th Grade

10 Qs

quiz-placeholder

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Разность квадратов

Разность квадратов

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Medium

Created by

Алла Булякова

Used 28+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Какое выражение не является формулой сокращённого умножения

(a + b)2 = a2 + 2ab + b2

(a - b)2 = a2 - 2ab + b2

a(b - c) = ab-ac

(a + b) (a - b) = a2 - b2

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Выберите правую

часть тождества

a2 - b2 =

(2a - 2b) (a - b)

(a - b) (a - b)

(a + b) (a - b)

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Применяя формулы сокращённого умножения, покажите равное выражение

в виде многочлена

(a - b) (a + b) =

a2 - b2

a2 + b2

a2 + 2ab + b2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Выберите правильный ответ

332 - 232

560

650

323

5.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

Выполните умножение:

(Х - 7) (Х + 7),

выберите все

НЕВЕРНЫЕ ОТВЕТЫ

Х2 + 49

Х2 - 7

Х2 + 7

Х2 - 49

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Разложите на множители

Х2 - 25

(Х - 25)(Х + 25)

(Х - 5)(Х + 5)

(Х - 5)(Х - 5)

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Отметьте выражения , которые можно упростить, используя формулу разности квадратов

(Х - 2) (Х +2)

2 - b) (b2 - a)

(4X + 3y) (4X - 3y)

(d3 - c) (d3 + c)

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