Like is name toy bears play kites don’t
My ____is Anna. I am eight years old. I'm a girl. I ____ kites and dolls. This ____Mary. She's my sister. She likes____ and dolls too. But we ____like toy cars and ____. We often____together.
一元二次方程a(x﹣1)2+b(x﹣1)+c=0化为一般形式后为2x2﹣3x﹣1=0,试求a,b,c的值.
在我国民间流传着许多诗歌形式的数学算题,这些题目叙述生动、活泼,它们大都是关于方程或方程组的应用题.由于诗歌的语言通俗易懂、雅俗共赏,因而一扫纯数学的枯燥无味之感,令人耳目一新,回味无穷.请根据下列诗意列方程组解应用题.