[tex]bonjour\\\\\\A = ( 2 x + 3 ){2} + ( 2 x + 3 ) ( 7 x - 2 )\\A = ( 2 x + 3 ) ( 2 x + 3 + 7 x - 2 )\\A = ( 2 x + 3 ) ( 9 x + 1 ) \\\\\\B = ( 4 x + 7 ) ( 4 x - 5 + 6 x - 9 ) \\B = ( 4 x + 7 ) ( 10 x - 14 ) \\\\C = ( 2 x - 9 ) ( x - 7 + 3 )\\C = ( 2 x - 9 ) ( x - 4 ) \\\\D = ( 2 x + 3 - 6 ) ( 2 x + 3 + 6 )\\D = ( 2 x - 3 ) ( 2 x+ 9 ) \\\\[/tex]
[tex]E = ( 5 x - 9 ) ( 5 x + 9) \\\\2 x ( 6 x + 8 ) = 0 \\x = 0\\x = - 8/6 = - 4/3 \\\\\\( x- 5 ) ( 6 - x ) = 0 \\x = 5\\x = 6 \\\\( x + 4 - 8 ) ( x + 4 + 8) = 0 \\( x - 4 ) ( x + 12 ) = 0 \\x = 4\\x = - 12[/tex]
