
формулы сокращенного умножения
Authored by Елена Григорьева
Mathematics
7th Grade
Used 19+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(5-a)(5+a)=
a2+25
25-a
25-a2
a2-5
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Преобразуйте выражение в многочлен : (5у+2х)2
5у2+10ху+2х2
25у2+10ху+4х2
25у2+20ху+4х2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Разложите на множители многочлен 16-x2
(2-x)(2+x)
(4-x)(4+x)
(4+x)(4+x)
(x-4)(x+4)
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Найди ошибку:
(5+3с)2= 25+30с+ 9с2
(2b2-1)2= 4b2-1
(2b+7cd)(7cd-2b)= 49c2d2- 4b2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Возвести в квадрат разность 2у-3
4у2-12у+9
4у2+12у+9
2у2-12у-9
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Преобразуйте выражение в многочлен : (5у+2х)2
5у2+10ху+2х2
25у2+10ху+4х2
25у2+20ху+4х2
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Представьте в виде многочлена:
(6-2m)2
36-24m+4m2
36+24m+4m2
6-12m+2m2
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