题目

由于公众的要求，电视台又把这部电视连续剧重播了一遍。（demand） 答案：The TV series has been brought back by popular demand. (because a lot of people want to see it.)下列各式正确的是A．x(2x2-x+1)=2x3-x2+1 B．2a+3b=5abC．(a-2b)(3a+b)=3a2-5ab-2b2D．x3· x2=x6