请你说明（4x³+8x²-6x-1）+（1.5x³-4.2x²+3.7x-6）-（3.8x²-2.3x+5.5x³+15）的值与x无关

请你说明（4x³+8x²-6x-1）+（1.5x³-4.2x²+3.7x-6）-（3.8x²-2.3x+5.5x³+15）的值与x无关
请你说明（4x³+8x²-6x-1）+（1.5x³-4.2x²+3.7x-6）-（3.8x²-2.3x+5.5x³+15
）的值与x无关

请你说明（4x³+8x²-6x-1）+（1.5x³-4.2x²+3.7x-6）-（3.8x²-2.3x+5.5x³+15）的值与x无关
(4x^3+8x^2-6x-1)+(1.5x^3-4.2x^2+3.7x-6)-(3.8x^2-2.3x+5.5x^3+15)
=4x^3+8x^2-6x-1+1.5x^3-4.2x^2+3.7x-6-3.8x^2+2.3x-5.5x^3-15
=(4x^3+1.5x^3-5.5x^3)+(8x^2-4.2x^2-3.8x^2)+(3.7x-6x+2.3x)-1-6-15
=0+0+0-22
=-22