题目内容
计算
(1)x3·(2x3)2÷(x4)2;
(2)-6a·(-a2-a+2);
(3)(2x-1)(x-3)-2(x-1)2;
(4)3(x2-x)+(3x4-2x3)÷(-x2)
计算:x3(2x3)2÷(x4)2