I want to buy a pair of skates ____ my brother.
因式分解: 25a2-10a+1=____.
诗歌和谚语往往蕴含着丰富的地理知识,下列对诗歌和谚语的解读不正确的是( )
方程|x-12|+|1-x3|=0的解是( )