Формулы сокращенного умножения
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
Амина Ибраева
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Возвести в квадрат сумму 4+3х
4+12х+3х2
16+24х +9х2
9х2+12х+16
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(5-a)(5+a)=
a2+25
25-a
25-a2
a2-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Представьте трехчлен в виде квадрата двучлена 4x2 +12x+9
(2+3х)2
(2-3х)2
(2x-3)2
(2x+3)2
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
В тождестве (a + *)2 = a2 + 4ab2 +4b4 значок * можно заметь одночленом:
2b2
-2b2
-4b2
4b2
такого одночлена не существует
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Составьте правильную формулу:
a³ + b³ =
a³ + 3a²b + 3ab² + b³
(a + b)(a² - ab + b²)
(a + b)(a² - 2ab + b²)
(a - b)(a² + ab + b²)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Преобразуйте выражение в многочлен : (5у+2х)2
5у2+10ху+2х2
25у2+10ху+4х2
25у2+20ху+4х2
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
В тождестве 27x3 - y6 = (3x3 - y2)(y4 + * + 9x6) значок * можно заменить выражением:
3x3y2
-3x3y2
6x3y2
-6x3y2
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