January 2023 2 21 Report
Supprime les parenthèses puis réduis l'expression suivante.
- (- 4x² + 2) + (9x - 6x2) - (2x - 7) = ...

O2x2-7x-5

O-10x2 + 7x - 5

O-2x2 + 7x + 5​
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