October 2020 0 161 Report
Factoriser 9x au carré -49. En déduire la factorisation l’expression suivante; =9x au carré -49-(3x-7)(2x-1)

En remarquant que 6x-21=3(2x-7). Factoriser
l’expression suivante;
6x-21+(2x-7)(1-5x)

Merci d’avance
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