Which of the following equations has 3 as a root?
A
x2\-\u00ad\7x\+\12\=\0
B
x2\-\u00ad\5x\+\12\=\0
C
x2\+\3x\+\12\=\0
D
x2\+\3x\-\u00ad\12\=\0
Correct Answer: x2\-\u00ad\7x\+\12\=\0