(-2x³y)²÷(-4xy)=?
(-2x³y)²÷(-4xy)=?
2x+y=0,求4x²+2xy(x+y)+y³
已知2x+y=0,求x-2y/x²+xy乘(x²-y²)÷x²-4xy+4y
[-(x-y)^2/xy]^-4*(y^2-xy/x)^3*(x^4/y^10)÷(xy-y^2/x)^-5=-y(y-
x-y/x²÷x²-2xy+y²/xy*(xy-x²)
4x²y³÷(-½xy)²=
﹙4x³y²-2x⁴y²-½xy)÷(-1/2xy) (^人^)
1.化简:x²-4y²/x²+y²+2xy÷2y+x/x²+xy.
x²+y²+2xy分之x²-4y² ÷x²+xy分之2y+x
(x²+2xy+y²分之x²-4y²)÷(x²+xy分之x+2y)
化简求值:[(xy-2)²+4xy-4]÷(xy),其中x=10,y=1/25
(-3x^y+2xy)-( )=4x^+xy