已知x눀-4x+4+|y+x|=0,求2x+x方⼀x方y-x方÷x方+4x+4⼀y方-2y+1×(X+2)的值?

2024-12-21 00:08:25
推荐回答(1个)
回答1:

(x-2)²+|y+x|=0
所以x-2=y+x=0
x=2
y=-2
原式=(x+2)/x(y-1)*(y-1)²/(x+2)²*(x+2)
=(y-1)/x
=-3/2