问题
解答题
计算或化简: (1)
(2)
(3)(
(4)a
|
答案
(1)原式=3
-52
+62
=42
;2
(2)原式=
-24÷3
+4
×181 2
=22
-3+42
=62
-3;2
(3)原式=5-2-(3-2
+2)=3-3+26
-2=26
-2;6
(4)原式=2a
-2a
+3aa 2a 2
=2a
.9a 2a 2
计算或化简: (1)
(2)
(3)(
(4)a
|
(1)原式=3
-52
+62
=42
;2
(2)原式=
-24÷3
+4
×181 2
=22
-3+42
=62
-3;2
(3)原式=5-2-(3-2
+2)=3-3+26
-2=26
-2;6
(4)原式=2a
-2a
+3aa 2a 2
=2a
.9a 2a 2