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Sagot :

VINS

Réponse :

bonsoir

A = ( 2 x +1 ) (  2x + 1 + x + 3 )

= ( 2 x + 1 ) ( 3 x + 4 )

b =  ( 2 x - 5 ) ( x + 1 + 2 x - 5 )

B = ( 2 x - 5 ) ( 3 x - 4 )

C = ( 3 x - 4 ) ( 2 - x - 3 x + 4 )

C = ( 3 x - 4 ) ( - 4 x + 6 )

C = 2 ( 3 x - 4 ) ( - 2 x + 3 )

Explications étape par étape

Bonjour,

A = (2x + 1)² + (2x + 1)(x + 3)

A = (2x + 1)[(2x + 1) + (x + 3)]

A = (2x + 1)(2x + 1 + x + 3)

A = (2x + 1)(3x + 4)

B = (x + 1)(2x - 5) + (2x - 5)²

B = (2x - 5)[(x + 1) + (2x - 5)]

B = (2x + 5)(x + 1 + 2x - 5)

B = (2x + 5)(3x - 4)

C = (3x - 4)(2 - x) - (3x - 4)²

C = (3x - 4)[(2 - x) - (3x - 4)]

C = (3x - 4)(2 - x - 3x + 4)

C = (3x - 4)(-4x + 6)

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