已知x,y是实数,且（x+y-1）²与√2x-y+4互为相反数,求实数y的x方的倒数.

已知x,y是实数,且（x+y-1）²与√2x-y+4互为相反数,求实数y的x方的倒数.
已知x,y是实数,且（x+y-1）²与√2x-y+4互为相反数,求实数y的x方的倒数.

已知x,y是实数,且（x+y-1）²与√2x-y+4互为相反数,求实数y的x方的倒数.
（x+y-1）²＋√2x-y+4＝0
x+y-1＝0
2x-y+4＝0
x=-1 y=2
y*x=1/2
实数y的x方的倒数是2