问题
解答题
计算: (1)(-2)2-|-8|+3-2×(-
(2)(-
|
答案
(1)(-2)2-|-8|+3-2×(-
)1 2
=4-8+3+1
=8-8
=0;
(2)(-
+1 2
-2 3
)×|-24|1 4
=(-
+1 2
-2 3
)×241 4
=(-
)×24+1 2
×24-2 3
×241 4
=-12+16-6
=-18+16
=-2.
计算: (1)(-2)2-|-8|+3-2×(-
(2)(-
|
(1)(-2)2-|-8|+3-2×(-
)1 2
=4-8+3+1
=8-8
=0;
(2)(-
+1 2
-2 3
)×|-24|1 4
=(-
+1 2
-2 3
)×241 4
=(-
)×24+1 2
×24-2 3
×241 4
=-12+16-6
=-18+16
=-2.