问题
解答题
计算 (1)
(2)
(3)32
(4)(π+1)0-
|
答案
(1)原式=4
-(4+2+42
)=-6;2
(2)原式=
÷5 3
×7 3
=7 5
×5 7
=1;7 5
(3)原式=32
+2x
-2x 2
=2x 4
;129 2x 4
(4)原式=1-2
+3
=1-3
.3
计算 (1)
(2)
(3)32
(4)(π+1)0-
|
(1)原式=4
-(4+2+42
)=-6;2
(2)原式=
÷5 3
×7 3
=7 5
×5 7
=1;7 5
(3)原式=32
+2x
-2x 2
=2x 4
;129 2x 4
(4)原式=1-2
+3
=1-3
.3