Bonjour
A = 9 b + 7 il doit manquer quelque chose
B = 10x - 8 x² - 35 + 28 x = - 8 x² + 38 x - 35
C = 4 x ( 2 x - 3 y + xy )
D = 4 x ( 4 x - cg )
Bonjour,
A= (9b + 7) = 9b+7
B = (2x - 7)(5 – 4x)
=10x -8x² -35 +28x
= -8x² +38x -35
2. Factoriser:
C = 8x² – 12xy + 4x²y
(4x)( 2x -3y + xy)
D=16x² - 4xcg
= (4x) ( 4x -cg)
svpp