问题
解答题
计算: (1)2
(2)2
(3)(
(4)
|
答案
(1)原式=-5
+75
;2
(2)原式=4
÷3
×5 2 2 3
=4
×3
×2 5 2 3
=
;12 2 5
(3)原式=(
)2-(5
)26
=5-6
=-1;
(4)原式=2
+3x
-2x x
=3
.x
计算: (1)2
(2)2
(3)(
(4)
|
(1)原式=-5
+75
;2
(2)原式=4
÷3
×5 2 2 3
=4
×3
×2 5 2 3
=
;12 2 5
(3)原式=(
)2-(5
)26
=5-6
=-1;
(4)原式=2
+3x
-2x x
=3
.x