bonjour
A = 3 x * 4 + x + ( - x ) * ( - 2 ) + 5 * 4 x
A = 12 x + x + 2 x + 20 x
A = 35 x
B = 5 x ² + ( 3 x - 4 ) + ( 2 x² + 3 ) + 2 x
B = 5 x² + 3 x - 4 + 2 x² + 3 + 2 x
B = 7 x² + 5 x - 1
C = 3 ( 2 x + 1 ) + x ( x - 2 )
C = 6 x + 3 + x² - 2 x
C = x² + 4 x + 3
D = x² ( 2 - x ) - 2 x ( x + 1 )
D = 2 x² - x ³ - 2 x² - 2 x
D = - x ³ - 2 x
