Sagot :
bonsoir
A = 3 x + 6 = 3 ( x + 2 )
B = 9 x² - 7 x = x ( 9 x - 7 )
C = ( 2 x - 7 ) ( x + 11 - 2 x + 7 ) = ( 2 x - 7 ) ( - x + 18 )
Bonjour,
A = 3x + 6 = 3(x+2)
B = 9x² - 7x = x(9x - 7)
C = (2x-7)(x+11)-(2x-7)²
= (2x-7)(x+11)-(2x-7)(2x-7)
= (2x-7)[(x+11)-(2x-7)]
= (2x-7)(-x+18)
= -(2x-7)(x-18)