解;原式=[（x2+y2)2-2x2y2]÷x2y2=(16x2y2-2x2y2)÷x2y2=14
已知:x2+y2=4xy,求(x4+y4)÷(xy)2
5个回答
相关问题
-
已知2x+y=0,求x-2y/x²+xy乘(x²-y²)÷x²-4xy+4y
-
已知(y+2x)/xy=3/2,求(4x+3xy+2y)/(-4x+8xy-2y)
-
数学问题已知x+y=-2,求(4x²y-8xy²-4xy)÷(4xy)-3(x+1)的值
-
已知1÷y－1÷x＝5,求(2x+4xy－2y)÷(x-3xy-y)的值
-
已知(4x-y-1)^2+根号x+y-2=0,求4x^2y-4xy+xy^2
-
已知x^2+4y^2-4x+4y+5=0,求(x^4-y^4/2x^2+xy-y^2)*(2x-y/xy-y^2)/(x
-
已知x^2+4y^2-2x+4y+2=0求（xy-x^2)/(x^2-2xy+y^2)/xy的值
-
已知x+y=4,xy=3,求4{xy+2y}+{6x-[2xy-y-3x}}的值
-
已知x+y=-4,xy=3,求4(xy+2y)+[6x-(2xy-y-3x)]的值
-
已知x+y/xy=4 求代数式5xy/4x+4y 减2x+2y/6xy的值