Формулы сокращенного умножения
Authored by Irina Kameneva
Mathematics
7th Grade
Used 16+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выполните преобразование : (у + 4)2
у2 + 16
у2 + 4у + 16
у2 + 8у + 16
у2 + 8у + 8
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выполнить преобразование: (3у - 5)2
3у2 - 30у + 25
9у2 - 15у + 25
9у2 - 30у +25
9у2 - 30у +10
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выполните умножение : (а + 2)(2 - а)
а2 - 4
а2 + 4
8 - а2
4 - а2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Выполните умножение : (0,4а + 10с)(10с - 0,4а)
1,6а2 - 10с2
100с2 - 0,16с2
0,16с2 - 100а2
0,16с2 + 100а2
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Разложить на множители: 3х2 - 12
3(x2 - 4)
3(x2 - 12)
3(х - 2)(х + 2)
3(х + 2)2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Представьте в виде произведения : а2 - 2аb + b2
(a +b)2
(a -b)2
a2 - b2
a2 + b2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Упростите выражение: (2а - b)(2a + b) + b2
4a2 - 4ab + b2
4a2
4a2 - b2
4a2 +4ab + b2
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