亲 先化解,在求值 1.x(x-1)-(x
问题描述:
亲 先化解,在求值 1.x(x-1)-(x
先化解,在求值
1.x(x-1)-(x-y)=-3,求(x-y)的值.
答
9
亲 先化解,在求值 1.x(x-1)-(x
先化解,在求值
1.x(x-1)-(x-y)=-3,求(x-y)的值.
9