Aidez moi svp au 46 svp

A= (x-2)(x-13)
  = x²-13x-2x+26
  = x²-15x+26

B= (y+5)(y-3)
  = y²-3y+5y-15
  = y²+2y-15

c= (2x-10)(x+3)
  = 2x²+6x-10x-30
  = 2x²-4x-30

d= (y+2)(-3y+3)
  = 3y²+3y-6y+6
  = -3y²-3y+6