--- Hey, Dad, can I have car on Friday night? --- What do you need it for? --- I want to take Sally to movie. A.a; a B.the; 不填 C.the; a D.a; the 答案:C(2010•邵阳)给出3个整式:x2,2x+1,x2-2x.(1)从上面3个整式中,选择你喜欢的两个整式进行加法运算,若结果能因式分解,请将其因式分解;(2)从上面3个整式中,任意选择两个整式进行加法运算,其结果能因式分解的概率是多少?