Question

2n根号下（2x-y)的2n+1次方=-3.2n+1根号下（x-2y的2n+1次方=-3求X+2Y的值

Answer 1

2n+1根号下（2x-y)的2n+1次方=-3.2n+1根号下（x-2y的2n+1次方=-3

2x-y=-3 (1)

x-2y=-3 (2)

(1)*2-(2) x=-1

把x=-1代入（1）得y=1

x+2y=1