C4- QCM3- Factoriser

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A toi de jouer !

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Question 1 *

5a - 5b peut se factoriser sous la forme:

1 point

a-b

5(a-b)

Other:

Question 2 *

5ab - 4b peut se factoriser sous la forme:

1 point

b²(5a -4)

-20ab²

b(5a - 4)

Question 3 *

Lorsque l’on factorise l’expression F= 4ab-6b², on obtient :

1 point

24ab²

2b(2a - 3b)

-2ab

Other:

Question 4 *

(3a – 4)(5a + 3) + (2a + 1)(3a– 4) peut se factoriser sous la forme

1 point

(3a – 4)[5a + 3 + 3a - 4]

(3a – 4)(8a - 1)

(3a – 4)(7a + 4)

21a² -

Question 5 *

(a – 2)² – (a– 2)(3a + 1) peut se factoriser sous la forme:

1 point

(a – 2)[1 – 3a + 1]

(a – 2)[4a - 1]

(a - 2) (-2a - 3)

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