Oblicz:
(x+1)(x+2)(x+3)
(x+1)(x+2)(x+3)=(x²+2x+x+2)(x+3)=(x²+3x+2)(x+3)=x³+3x²+3x²+9x+2x+6=
=x³+6x²+11x+6
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(x+1)(x+2)(x+3)=(x²+2x+x+2)(x+3)=(x²+3x+2)(x+3)=x³+3x²+3x²+9x+2x+6=
=x³+6x²+11x+6