
Формули скороченого множення
Authored by Елена Черняк
Mathematics
7th Grade
Used 3+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(5а + 3b) (5а – 3b) =...
5а2 – 3b2
25а2 + 9b2
5а2 + 3b2
25а2 – 9b2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(7а + 2)2 =...
49а2 + 28а + 4
49а2 + 14а + 4
49а2 + 4
7а2 + 28а + 4
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(9а – b)2 =...
81а2 – 9аb + b2
81а2 – b2
81а2 – 18аb + b2
9а2 – 18аb + b2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(а + 7)( а2 – 7а + 49) =...
а3 – 343
а2 – 49
а3 + 343
а3 + 7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(с – 8)(с2 + 8с + 64) =...
с2 – 64
с3 – 512
с3 + 512
с3 – 8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
( – b2 + 4)( b2 + 4) =...
16 – b2
b4 – 16
b4 – 16
16 – b4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
(а2 + 1)(а + 1)(а – 1) =...
а4 – 1
а2 – 2
а2 – 1
а2 – 2
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