Question

已知x,y满足|x-y-4|+(x+y)^2=0,求(1/2x^2y)^3的值

Answer 1

因为|x-y-4|+(x+y)^2=0

所以|x-y-4|=0,(x+y)^2=0,所以x=2,y=-2

(1/2x^2y)^3=4^12=2^24