1/2X^3-1/4X+0.2X^2+0.25x-0.5x^3-1/5x^2的值与x无关_数学解答

1/2X^3-1/4X+0.2X^2+0.25x-0.5x^3-1/5x^2的值与x无关

人气：452 ℃　时间：2020-04-26 08:23:36

解答

1/2x³-1/4x+0.2x²+0.25x-0.5x³-1/5x²
=(1/2x³-0.5x³)+(0.2x²-1/5x²)+(-1/4x+0.25x)
=0
∵无论x取何值,代数式的值都等于0
∴代数式的值与x无关.