(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,其中x=-2

(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,其中x=-2
(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,其中x=-2

(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,其中x=-2
(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4,
=x³+1-3x-x^2,
=x^3-x^2-3x+1
=-8-4+6+1
=-5

(x+1)(x²-x+1)+6x³÷(-2x²)+(-x^6)÷x^4
=(x+1)(x²-x+1)-6x³÷2x²-x^6÷x^4
=(x+1)(x²-x+1)-3x-x²
=x³-x²+x+x²-x+1-3x-x²
=x³-3x-x²+1
=x(x²-x-3)+1
∵x=-2
∴-2X[(-2)²+2-3]+1=-5