已知实数a,b,x,y满足ax by=3,ay-bx=5,则(a2 b2)(x2 y2)的值是______. 已知实数a,b,x,y满足ax by=3,ay-bx=5,则(a2 b2)(x2 y2)的值是______. 发布时间:2025-09-08 12:19:38