Формулы сокращённого умножения

Формулы сокращённого умножения

KG - 8th Grade

10 Qs

quiz-placeholder

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Формулы сокращённого умножения

Формулы сокращённого умножения

Assessment

Quiz

Mathematics

KG - 8th Grade

Practice Problem

Hard

Created by

Татьяна Реутская

Used 447+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Разложить на множители: 25-b2

(25-b)(25+b)
(5-b)(5+b)
(5-b)(5-b)
(625-b)(625+b)

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Разложить на множители: 4n6-1

(4n3-1)(4n3+1)
(2n3-1)(2n3-1)
(8n3-1)(8n3+1)
(2n3-1)(2n3+1)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Звездочку заменить одночленом так, чтобы получилось верное равенство:
m8 - (*) =(m4-25)(m4+25).

25; 
5; 
625;
125; 

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Что нужно поставить вместо (*), чтобы равенство было верным?
(*)-16m2=(bc-4m)(bc+4m).

b2c
(bc)2
4bc
(bc)4

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Упростить:
(m2-2b)(m2+2b)

m2-4b2
m2+4b2
m4+8b2
 m4-4b2

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Записать в виде многочлена:
(-4b-5c)(5c-4b)

16b2-25c2
25c2-16b2
25c2+16b2
16b2+25c2

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Раскройте скобки  (7в + 2а)2

49в2 + 14ав + 4а2
49в2 + 4а2
49в2 + 28ав + 4а2
49в2 + 28а2в2 + 4а2

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