问题
解答题
计算: (1)
(2)(
|
答案
(1)原式=3
-22
+22
=32
;2
(2)(
-5
+3
+5
)(3
-5
-3
-5
)=23
×(-25
)=-43
.15
计算: (1)
(2)(
|
(1)原式=3
-22
+22
=32
;2
(2)(
-5
+3
+5
)(3
-5
-3
-5
)=23
×(-25
)=-43
.15