计算题.-﹙-x²﹚×﹙-2x²y﹚³+2x²﹙x6次方y³-1﹚.
计算题.-﹙-x²﹚×﹙-2x²y﹚³+2x²﹙x6次方y³-1﹚.
计算题:(x²+6x)²-﹙2x-4﹚²
计算题 (1)-x²·﹙-x﹚² (2)﹙x-2﹚﹙x+3﹚
数学计算题(x-y)²(y-x)³
数学计算题(0.3x³+x²y-2xy²)-(0.5x³-2x²y+1
数学幂的乘方计算题幂的乘方[(x-y)³]²×[(y-x)²]³若2的x次方=4
[(x+2y)²-﹙x-y﹚﹙x+2y﹚-5y²]÷﹙2y﹚²等于多少
求值:(-3x³y)²+(2x²﹚³·﹙﹣y﹚²﹢4x的6次方y
(x+3y)/﹙x²-y²﹚-(x+2y)/(x²-y²)+﹙2x-3y﹚/﹙x
若(X-1)²与│2X+Y│互为相反数,求﹙﹣X﹚2010的次方+Y³的值
3x²-3﹙6x+4y﹚-2[x³+3﹙3x-2y﹚]其中x=1/5,y=3/4
(2×y+x²-y²)-(x²-y²-3xy) 计算题,