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Sagot :

Bonjour,

Développer:

g(x)= (3x-1)²= (3x-1)(3x-1)= 9x²-3x-3x+1= 9x²-6x+1

G(x)=(3x-1)^2

=(3x×3x)-(3x×1)+(1×1)-(1×3x)

=9x^2-3x+1-3x

=9x^2-6x+1

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