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Sagot :

Bonsoir,

ce sont des identités remarquables

(3x+1)²

(x-4)²

(6x-4) (6x+4)

Bonsoir.

Factoriser :

= 9x²+6x+1

= 3²x²+6x+1

= 3²x²+2×3x×1+1

= 3²x²+2×3x×1+1²

= (3x)²+2×3x×1+1²

= (3x+1)²

= x²-8x+16

= x²-2×x×4+16

= x²-2×x×4+4²

= (x-4)²

= 38x²-16

= 2(19x²-8)

Bonne soirée.

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