Question

数学题求解答过程，详细点，谢谢

数学题求解答过程，详细点，谢谢数学题求解答过程，详细点，谢谢

Answer 1

B

Answer 2

U={1,2,3,4}
CuM = {2,3}
=>和兄携尘差M={1,4}
x=1
x^2-5x+p=0
1-5+p=0
p=4
x=4
x^2-5x+p=0
16-20+p=0
p=4
=>唤伏
p=4