设方程2x+x+2=0和方程log2x+x+2=0的根分别为p和q,设函数f(x)=(x+p)(x+q)+2,则( )
A:f(2)=f(0)<f(3)
B:f(0)<f(2)<f(3)
C:f(3)<f(0)=f(2)
D:f(0)<f(3)<f(2)
We should use _______ plastic bags to protect the environment. Let's say goodbye to them.
先化简,再求值: a2−b2a÷(a−2ab−b2a) ,其中 a=2+3 , b=2−3 .