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(X-3) * (X²+ 2X-4) - 2(3X+4)+X(2-X)= SI astalanta
                                          (X+1)²+(X+1) * (X-1)


Răspuns :


(x-3) * (x²+ 2x-4) - 2(3x+4)+x(2-x)=
=x³-3x²+2x²-6x-4x+12-6x-8+2x-x²=
=x³-2x²-14x+4


(x+1)²+(x+1) * (x-1)=
=(
x+1)(x+1+x-1)=
=2x(x+1)