来自杜太行的问题
计算题.(1)2x−1+x+11−x(2)x+33−x+x2−9x2+6x+9(3)a+2-42−a
计算题.
(1)2x−1+x+11−x
(2)x+33−x+x2−9x2+6x+9
(3)a+2-42−a
1回答
2020-10-10 02:54
计算题.(1)2x−1+x+11−x(2)x+33−x+x2−9x2+6x+9(3)a+2-42−a
计算题.
(1)2x−1+x+11−x
(2)x+33−x+x2−9x2+6x+9
(3)a+2-42−a
(1)原式=2x−1−x+1x−1