bonjour
[tex]( 2 x - 3 ) ( x + 2 ) - 5 ( 2 x - 3 )\\2 x^{2} + 4 x - 3 x - 6 - 10 x + 15\\2 x^{2} - 9 x + 9 \\\\[/tex]
Forme factoriser :
(2x-3)(x+2)-5(2x-3)
= (2x-3)(x-3)
Forme simplifier :
= 2x²-6x-3x+9
= 2x²-9x+9
