问题
解答题
计算: (1)
(2)(
(3)11-8÷(-2)3+3×(-2) |
答案
(1)原式=2
-2 3
≈2×1.414-1.732
≈1.10;
(2)原式=
×48-2 3
×48-1 4
×483 8
=32-12-18
=2;
(3)原式=11-8÷(-8)+3×(-2)
=11+1-6
=6.
计算: (1)
(2)(
(3)11-8÷(-2)3+3×(-2) |
(1)原式=2
-2 3
≈2×1.414-1.732
≈1.10;
(2)原式=
×48-2 3
×48-1 4
×483 8
=32-12-18
=2;
(3)原式=11-8÷(-8)+3×(-2)
=11+1-6
=6.