(1)x(x-1)-(x^2-y)=-2,求{(x^2)+(y^2)}/2-xy
问题描述:
(1)x(x-1)-(x^2-y)=-2,求{(x^2)+(y^2)}/2-xy
等于多少~
答
-2
(1)x(x-1)-(x^2-y)=-2,求{(x^2)+(y^2)}/2-xy
等于多少~
-2