[tex]bonjour\\\\\\8 ( x - 4 ) = 8 x - 32\\- 9 ( 2 x - 4 ) = - 18 x + 36 \\- 7 ( - 6 x + 3 ) = 42 x - 21 \\( 5 x - 4 ) * 6 + 3 ( 9 x - 7 ) = 30 x - 24 + 27 x - 21 = 57 x - 45 \\9 ( 5 x + 4 ) - ( 5 x - 4 ) ( 2 x -6 ) = 45 x + 36 - ( 10 x^{2} - 30 x - 8 x + 24 ) \\= 45 x + 36 - 10 x^{2} + 38 x - 21 = - 10 x^{2} + 83 x + 15 \\\\( x - 4 ){2} = x^{2} - 8 x + 16\\\\( 2 x - 5 ) ( 3 x + 7) = 6 x^{2} + 14 x - 15 x - 35 = 6 x^{2} - x - 35 \\\\( x - 2 ) ( x + 2) = x^{2} - 4 \\\\\\[/tex]
