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Sagot :

MARGESIMPSON1

Bonsoir,

Développer puis réduire :

= 2(x+3)6+x(4x+3)

= 12(x+3)+x(4x+3)

= 12(x+3)+4x²+3x

= 12x+36+4x²+3x

= 15x+36+4x²

= 4x²+15x+36

= 2-(5x-9)-x+17x

= 2-5x+9-x+17x

= 11-5x-x+17x

= 11+11x

= 3x(4x+8)

= 3x×4x+3x×8

= 12x²+3x×8

= 12x²+24x

= -2x(0,5-3)

= -2x(-2,5)

= 2x×2,5

= 5x

Bonne soirée.

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