分解因式:x2+2x-3=______.
x2+2x-3=(x+3)(x-1).
故答案为:(x+3)(x-1).
Eddie is Millie's dog. _____ eyes are very big. [ ]
A. It's
B. Its
C. It
D. It is
下列关于实型常量书写正确的是( )。
A.E4
B.3.4e8
C.1.8E0.6
D.6e0.8