问题
解答题
计算: (1)
(2)
(3)
(4)(2
(5)(3
|
答案
(1)原式=2
×6 6
=12;
(2)原式=
-12 3 3
=2-1
=1;
(3)原式=3
-23x
+33x
-25x 5x
=
+3x
;5x
(4)原式=(4
-3
)×3 6
=3
×3
×3 2
=9
;2
(5)原式=(6
-43
+43
)÷23 3
=6
÷23 3
=3.
计算: (1)
(2)
(3)
(4)(2
(5)(3
|
(1)原式=2
×6 6
=12;
(2)原式=
-12 3 3
=2-1
=1;
(3)原式=3
-23x
+33x
-25x 5x
=
+3x
;5x
(4)原式=(4
-3
)×3 6
=3
×3
×3 2
=9
;2
(5)原式=(6
-43
+43
)÷23 3
=6
÷23 3
=3.