一元二次方程x2﹣6x﹣6=0配方后化为( )
A:(x﹣3)2=15
B:(x﹣3)2=3
C:(x+3)2=15
D:(x+3)2=3
一字组多词
熊____ ____ 奇 ____ ____
— Where is your father?
— He ________ the World Cup in the living room.