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Sagot :

NEMY24

Salut!!

Explications étape par étape:

Factorisons:

a²-b²=(a-b)(a+b)

x²-9= X²-(3)²

x²-9= (x-3)(x+3)

B) (x+1)²-(4)²

[(x+1)-4)] [(x+1)+4)]

(x-3) (x+5)

Other Questions

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