bonjour aide moi svp merci exercice 2

A =( 5*(-3x)) + (5*2)                                   C = (8x - 1) - 23
   = -15x + 10                                                  = (-23x*8x) - (-23x*1)
                                                                         = -184 x² + 23
B = (-8*5a) - (-8*3)
    = -40a + 24