JADEYASSIN234
Answered

bonjour j'ai besoin d'aide svp TEST FACTORISATIONS ET IDENTITES Remarquables. Factorise les expressions C = x² – 36
D = 81 – x²
E=49+16x^2-40x

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Sagot :

Bonjour !

C = x²- 36 = > a² - b² = (a+b) (a-b)

x² - 36 = x²- 6² = (x+6)(x-6)

D = 81 - x² = 9²-x² = (9-x)(9+x)

E = 49+16x²-40 = (4x-3)(4x+3)

Bon courage.