√x²y﹙3√xy²-2√x/y+4√y/x²) 在初中怎么计算
√x²y﹙3√xy²-2√x/y+4√y/x²) 在初中怎么计算
计算 2xy[4x²y²-3y(xy+x²y)-xy²]
已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y
计算:(xy-x²)×x-y/xy
计算3x[xy-2x(1/y-x/3]+3y(x²-y²)
已知x²+y²-4x-2y+5=0,求代数式[(√x-√y)²+4√xy]/(x+√xy)
已知:x²+y²-4x-2y+5=0,求x+√xy分之(√x-√y)²+4√xy的值.
计算:(-7x²y)(2x²y-3xy³+xy)
分式计算:(x²+2xy+y²)/(x²y+xy)*y/(x+y)
3x²y+xy²-[2xy²-4x²y+(x²y-2xy²)
初中分式计算:(xy-x²)·xy/x-y
计算3x/8y×16y²/27x² (2xy-x²)÷x-2y/xy 2x-6/x