题目

已知x+y=10，xy=16，则x2y+xy2的值为 ． 答案：【答案】160．【解析】试题解析：∵x+y=10，xy=16，∴x2y+xy2=xy（x+y）=10×16=160．I didn't realize my mother loves me so such until I received her gift for my 18th birthday, a diary______ the process of my growth． A．recorded         B．to record          C．recording         D．having recorded