若x2 =25a8b6,求 x的值
某小组将将鲫鱼、水草、荷花、水鸭、蟹等归为一类,将松、蝇、玫瑰、麻雀等归为一类.他们归类的方法是( )
19.5×1.3-0.95×13
—I've got a headache.
—No wonder.You in front of the computer too long.