bonsoir
A= 2y(y + 1) + 2y(2 + y)
A = 2 y ( y + 1 + 2 + y )
A = 2 y ( 2 y + 3 )
B = 25 + 10x + x²
B = ( x + 5 )²
C = 4x² - 40x + 100
C = ( 2 x - 10 )²
D = 16 - 9y²
D = ( 4 - 3 y ) ( 4 + 3 y )
E = (x + 3)(x - 9) - (x + 3)²
E = ( x + 3 ) ( x - 9 - x - 3 )
E= ( x + 3 ) ( - 12 )
