J'aurais besoin d'une vérification pour mon calcul svp :) (7x (-2) -3)² -(7 x(-2) -3 )(2x(-2) +1)
=(-14 -3)² -(-14-3)(-4+1)
=(-17)² - (-17)(-3)
=34+17x -3
=34-51
=-17 ??
=(-14 -3)² -(-14-3)(-4+1)
=(-17)² - (-17)(-3)
=34+17x -3
=34-51
=-17 ??
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