Bonjour,
C = (3x+1)(-5x+3)
= 3x×(-5x)+3x×3+1×(-5x)+1×3
= -15x² + 9x - 5x + 3
= -15x² + 4x + 3
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Bonjour,
C = (3x+1)(-5x+3)
= 3x×(-5x)+3x×3+1×(-5x)+1×3
= -15x² + 9x - 5x + 3
= -15x² + 4x + 3