数学整式除法计算:(1)(7x²y³-8x²y³z)÷8x²y&sup
数学整式除法计算:(1)(7x²y³-8x²y³z)÷8x²y&sup
已知:x+y+z=1,x²+y²+z²=2,x³+y³+z³
7-2xy-3x²y³+5x³y²z-9x⁴y³z&sup
x³y³-x²y²-xy+1
(x+y)²-(x³+y³)÷(x+y)
已知x+y+z=3,x²+y²+z²=19,x³+y³+z³
化简再求值 4x³(-y³)²-3x×(-x)²(-y²)³
已知x,y满足x²+y²-4x-6y+13=0,求(-y/x³)³÷(-1/xy
1、(4x²y-2x³)÷(-2x)²
1、证明x³+y³≥x²y+y²x
化简并求值:4x ³(-y ³)² -3x 乘(-x)²(-y²)&s
有这样一道计算题:“计算(2x³-3x²y-2xy²)-(x³-2xy²