计算-(-3x²y³)²×(-x³y²)³
计算:(x-y)的5次方(x-y)²(x-y)³
计算:x•(9x³y-3xy²)/(-3x²y)
计算4(x+y)^5(x-y)^4÷[2(x+y)³*(y-x)²]
计算:①-x·(y-x)³·(x-y)的四次方 ②(x-y)²·(y-x)³·(x-y)的
计算 [12(x+y)³(y-x)]³÷[4(x+y)²(x-y)]²
计算-(-3x²y³)²×(-x³y²)³
(x-y)·2(x-y)²·3(x-y)³ 计算
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:(x+y)³(2x+2y)²(3x+3y)²(结果用(x+y)的幂表示)
求因式分解(x-y)²-2(x-y)³和(x+y)(x-y)-x(x-y)