Question

x-1=y-23 y+1=x+23 y+x=2y-22

Answer 1

x-1=y-23 ①

y+1=x+23 ②

y+x=2y-22 ③

①就是②

②、③均可变成

y=x+22 ④

x²=y-23 ⑤

∴x²-x+1=0

∴x=﹙1±√3i﹚/2

y=﹙45±√3i﹚/2