Bonjour, factoriser ce calcul ( x –3 )² +( x – 3 )( 1 – 2x ) Merci ​

[tex]( x –3 )² +( x – 3 )( 1 – 2x )[/tex]

[tex]x {}^ 2−2x×3+3 {}^ 2+(x−3)(1−2x)

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[tex]x {}^{2} −2x×3+3 {}^{2} +x−2x {}^{2} −3+6x

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[tex]x {}^{2} −2x×3+9+x−2x {}^{2} −3+6x

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[tex]x {}^{2} −6x+9+x−2x {}^{2} −3+6x

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[tex](x {}^{2} −2x {}^{2} )+(−6x+x+6x)+(9−3)

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[tex]−x {}^{2} +x+6

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Voila, Bon courage.