Разность квадратов
7th Grade
•10 Qs
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Разность квадратов
Quiz
•
Mathematics
•
7th Grade
•
Medium
Алла Булякова
Used 28+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Какое выражение не является формулой сокращённого умножения
(a + b)2 = a2 + 2ab + b2
(a - b)2 = a2 - 2ab + b2
a(b - c) = ab-ac
(a + b) (a - b) = a2 - b2
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Выберите правую
часть тождества
a2 - b2 =
(2a - 2b) (a - b)
(a - b) (a - b)
(a + b) (a - b)
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Применяя формулы сокращённого умножения, покажите равное выражение
в виде многочлена
(a - b) (a + b) =
a2 - b2
a2 + b2
a2 + 2ab + b2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Выберите правильный ответ
332 - 232
560
650
323
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Выполните умножение:
(Х - 7) (Х + 7),
выберите все
НЕВЕРНЫЕ ОТВЕТЫ
Х2 + 49
Х2 - 7
Х2 + 7
Х2 - 49
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Разложите на множители
Х2 - 25
(Х - 25)(Х + 25)
(Х - 5)(Х + 5)
(Х - 5)(Х - 5)
7.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Отметьте выражения , которые можно упростить, используя формулу разности квадратов
(Х - 2) (Х +2)
(а2 - b) (b2 - a)
(4X + 3y) (4X - 3y)
(d3 - c) (d3 + c)
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