(a + b) (a - b) = a² - b² (& omgekeerd)
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
Iris Struyf
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11 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Merkwaardig product (a + b) (a - b) =
a² - b²
a² + b²
a² + 2ab + b²
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
(a - 9)(a + 9) =
a² - 81
a² + 81
a² - 18a + 81
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
(2a² - 3b) (2a² + 3b) =
4a² - 9b
4a4 - 18b
4a4 - 9b²
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Nu omgekeerd! Het antwoord is 9a² - 16, wat was de opgave?
(3a - 4) (3a + 4)
(9a - 4)(9a + 4)
(3a - 8) (3a + 8)
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Het antwoord is: 25b² - 9c², wat was de opgave?
(5b - 9c) (5b + 9c)
(5b² + 3c) (5b² - 3c)
(5b + 3c) (5b - 3c)
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
het antwoord is: 100x² - 36, wat was de vraag?
(10x² + 6) (10x² - 6)
(10x + 6) (10x - 6)
(10x² - 6) (10x² + 6)
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Vul aan: 81a²b² - 16 = (9ab - .....) (9ab + ......)
4
8
16
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