2(x³)²·x³-(3x³)³+(5x)²·x^7
2x^5·x^5+(-x)²·x·(-x)³计算
2道分式计算[(x+4)(x-2)]/x³+2x²+x÷[(x-2)/x·(x+4)/(x+1)]2
3x³·x^9+x²·x^10-2x·x³·x^8计算
4x²-1/3x²-x·9x³-x/2x^4-x³计算 急
先化简,再求值.1.3x³-【x³+(6x²-7x)】-2(x³-3x²
已知(x+1)(x²+2x+3)=x³+3x+5x+3,那么,将x³+3x²+5
(3x²)³-7x³[x³-x(4x²+1)]
(8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3
计算:(-x³-3x²+7x-8)-(3x³-2x²-5x+4)-(-x
3x³-2x*x²
已知x²-x-1的值是0求x³-x²-x+5和(3x²+5x+2)-(x
2x^6×x³-3x^9+5x²×x^7等于多少