题目9.若实数x,y满足xy+x+y=10,x²y+xy²=24,则x²+y²=()A. 4B. 28C. 34D. 44E. 529.若实数x,y满足xy+x+y=10,x²y+xy²=24,则x²+y²=()A. 4B. 28C. 34D. 44E. 52题目解答答案B. 28