已知xy是实数,且(x+y-1)²与根号2x-y+4互为相反数,求实数y的x次方
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已知xy是实数,且(x+y-1)²与根号2x-y+4互为相反数,求实数y的x次方
已知xy是实数,且(x+y-1)²与根号2x-y+4互为相反数,求实数y的x次方
已知xy是实数,且(x+y-1)²与根号2x-y+4互为相反数,求实数y的x次方