计算填空:(-3x²y³)³(3x²y)=多少?
计算:x•(9x³y-3xy²)/(-3x²y)
(x-y)·2(x-y)²·3(x-y)³ 计算
(x-y)³(x-y)²(y-x)等于多少
3(x³y-²)²÷(x-²y)³=多少啊
计算-(-3x²y³)²×(-x³y²)³
计算:(-7x²y)(2x²y-3xy³+xy)
计算(3x-3y)²(x-y)³(y-x)²(y-x)³要过程,
计算:8x/3y·(-3y/2x²)³.
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
计算:(x+y)³(2x+2y)²(3x+3y)²(结果用(x+y)的幂表示)
(3x²y)³·(-4x)计算
x·(9x³y-3xy²)÷(﹣3x²y) 计算