问题
解答题
计算: (1)(
(2)5x3-3[-x2+2(x3-
|
答案
(1)原式=-24×
-24×11 8
+24×7 3
=-33-56+90=1;15 4
(2)原式=5x3+3x2-6x3+2x2=-x3+5x2.
计算: (1)(
(2)5x3-3[-x2+2(x3-
|
(1)原式=-24×
-24×11 8
+24×7 3
=-33-56+90=1;15 4
(2)原式=5x3+3x2-6x3+2x2=-x3+5x2.