计算 [-(xy)²]³
计算 [-(xy)²]³
计算:-2x²y(-2xy²)²+(2xy)³·(xy²)
计算:(xy-x²)×x-y/xy
【回答后给分】【初一下】计算:①(4xy)·(-2xy³) ②(-xy²z³)²
计算[5xy²(x²-3xy)-(-3x²y²)³]÷(-5xy)
计算:(-3x²y²)²•(2xy)³÷(xy)²
计算:(-7x²y)(2x²y-3xy³+xy)
计算x²y³-2x(4xy³)
计算:(xy-x²)乘 x-y分之xy
计算(2x³-3x²y-2xy²)-(x³-2xy²+y³)
计算:x²y-(2xy²-5x²y)+3xy²-y³
计算[(x²-y²)/y]²÷(x²+xy)³·(xy/y-x)