Bonjour,
6x + 3x² = 3x(2+x)
(-3x+4)x - 9x = -3x²+4x-9x = -3x²-5x = -x(3x+5)
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Bonjour,
6x + 3x² = 3x(2+x)
(-3x+4)x - 9x = -3x²+4x-9x = -3x²-5x = -x(3x+5)