13x的平方-6xy+y的平方-4x+1=0,
9x²-6xy+y²+4x²-4x+1=0
(3x-y)²+(2x-1)²=0
则3x-y=0 2x-1=0
x=1/2 y=3/2
(xy-x的平方)的五次方
=(1/2×3/2-1/2²)的的五次方
=(3/4-1/4)的的五次方
=1/2的五次方
=1/32
13x的平方-6xy+y的平方-4x+1=0,
9x²-6xy+y²+4x²-4x+1=0
(3x-y)²+(2x-1)²=0
则3x-y=0 2x-1=0
x=1/2 y=3/2
(xy-x的平方)的五次方
=(1/2×3/2-1/2²)的的五次方
=(3/4-1/4)的的五次方
=1/2的五次方
=1/32