问题
解答题
计算 (1)
( 2)3
|
答案
(1)原式=
×32 3
+3×x
-2x•3x 3 1 x x
=2
+x
-23x x
=3x
(2)原式=3 2
÷220 5
=
×3 4 4
=3 2
计算 (1)
( 2)3
|
(1)原式=
×32 3
+3×x
-2x•3x 3 1 x x
=2
+x
-23x x
=3x
(2)原式=3 2
÷220 5
=
×3 4 4
=3 2