Question

Cine rezolva cele mai multe si CORECTE, dau mega COROANA. Dau 35Puncte.
(x+3)(x-5)-(x-5)(x-6) =
(x-4)(x-1)-(x+3)(x-1) =
(x-8)(x-2)-(x+8)(x-5) =
(x-7)(x-5)-(x+2)(x-5) =
(2x+5)(x-7)-(x+2)(x-5) =
(2x+6)(x-3)-(x-8)(2x-2) =
(4x+4) la 2 -16(x-4)(x+6) =

Answer 1

A)x²-5x+3x-15-( x²-6x-5x+30)=-2x-15+11x-30=9x-45=9(x-5)
B) x²-x-4x+4-(x²-x+3x-3)= -5x+4-2x+3=-7x+7=-7(x-1)
C) x²-2x-8x+16-(x²-5x+8x-40)=-10x+16-3x+40= -13x+56
D)x²-5x-7x+35-(x²-5x+2x-10)=-12x+35+3x+10=-9x+45=-9(x-5) 
E) 2x²-14x+5x-35-(x²-5x+2x-10)=x²-9x-35+3x+10=x²-6x-25
F) 2x²-6x+6x-18-(2x²-2x-16x+16)= -18+18x-16=18x-34=2(9x-17)
G) 4x²+32x+16-16(x²+6x-4x-24)= -12x²+400=-2(x²-200)