(1)(π−1)0+(−1/2)−1+|5−27|−23. (2)(2+3)2−(2−3)(2+3).
问题描述:
(1)(π−1)0+(−
)−1+|5−1 2
|−2
27
.
3
(2)(
+
2
)2−(
3
−
2
)(
3
+
2
).
3
答
(1)原式=1-2+3
-5-2
3
=
3
-6;
3
(2)原式=2+3+2
-(2-3)=2
6
+6.
6