April 2019 1 53 Report

On considère l'expression suivante : E = 36 - 12x + x² + (3-4x)(6-x)

1) Developper et réduire l'expression E.

2)a) Factoriser l'expression 36-12x+x².

b) En deduire une factorisation de E.

3) Calculer E pour ;

a) x= 6

b) x= \sqrt{5}

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