January 2021 0 139 Report
Regroupe puis réduis les expressions. A. = 5x² + 1 + 3x + 14 + 2x² + 1
B. = 6 + 6x + 8x² − 9x − x² + 4
C. = 9x² − xy + 17 + 4y² + 5xy − 8x² − 11
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