bonjour,
B = (5x-1) (2-3x) - (4x-6)
B = 10x - 15x² -2 + 3x - 4x + 6
B = -15x² + 9x + 4
:)
Salut!
B=(5x-1)(2-3x)-(4x-6)
=10x-15x^2-2+3x-4x+6
=-15x^2+9x+4
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bonjour,
B = (5x-1) (2-3x) - (4x-6)
B = 10x - 15x² -2 + 3x - 4x + 6
B = -15x² + 9x + 4
:)
Salut!
B=(5x-1)(2-3x)-(4x-6)
=10x-15x^2-2+3x-4x+6
=-15x^2+9x+4