C4- QCM2- Développer

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A toi de jouer !

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Prénom *

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Question 1 *

Complète 3(a+2) =

1 point

3a + 2

3a + 6

Other:

Question 2 *

2(3a - 4) est égal à

1 point

6a - 8

6a - 4

5a - 6

-24a

Other:

Question 3 *

-4a(2a - 7) se développe:

1 point

-8a² - 7

-8a² + 28a

20a²

Question 4 *

Lorsque on développe (4a + 2) (5a + 3)

1 point

48a²

20a² + 22a + 6

20a² + 6

Other:

Question 5 *

Lorsque on développe (3a + 2) (5a - 4)

1 point

-5a²

15a² -2a - 8

15a² - 8

Other:

Question 6 *

17a + (3a - 5) = ?

1 point

17a + 3a - 5 = 15a

17a + 3a - 5 = 20a - 5

17a + 3a + 5 = 20a + 5

Question 7 *

15b - (-1 + 2b)

1 point

15b + 1 + 2b = 17b + 1

15b - 1 + 2b = 17b - 1

15b + 1 - 2b = 13b + 1

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