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Sagot :

Salut

[tex]B=x(x+1)(3-4x)[/tex]

[tex]B= (x^{2} +x)(3-4x[/tex]

[tex]B=3x^{2} -4x^{3} +3x-4x^{2}[/tex]

[tex]B=-x^{2} -4x^{3} +3x[/tex]

[tex]C=(x-6)(7-2x)*3[/tex]

[tex]C=21x-6x^{2} -126+36x[/tex]

[tex]C=57x-6x^{2} -126[/tex]

[tex]D=2(x-1)(2x+3)[/tex]

[tex]D= 4x^{2} +6x-4x-6[/tex]

[tex]D=4x^{2} +2x-6[/tex]

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