m2(a-2)+m(2-a),
=m2(a-2)-m(a-2),
=m(a-2)(m-1).
猜你喜欢
- 11.Robert hurt his leg just now.In the hospital ,the doctor________him carefuily
- 2your friend comes to school very upset
- 3他不知道出生在何时何地 英文翻译
- 4一个三角形的底长6米,如果底边延长2米,那么面积就增加3平方米.原来三角形的面积是多少平方米?
- 5化简(2cos²α-1)/2tan(π/4+α)sin²(π/4-α)
- 6You may say that they go to school to learn Chinese,English and other subjiects?
- 7证明1元等于1分钱
- 8如图,△ABC中,AB=AC,D、E、F分别为AB、BC、CA上的点,且BD=CE,∠DEF=∠B. 求证:△DEF是等腰三角形.
- 9英语翻译
- 10I_____already_____(see)the film.I____(see)it last week.