问题
解答题
(1)(3.14-π)0-
(2)598×602-5992(用简便方法计算). |
答案
(1)原式=1-
×3-(-2)2 3
=1-2+2
=1;
(2)598×602-5992
=(600-2)(600+2)-(600-1)2
=6002-4-6002+1200-1
=1195.
(1)(3.14-π)0-
(2)598×602-5992(用简便方法计算). |
(1)原式=1-
×3-(-2)2 3
=1-2+2
=1;
(2)598×602-5992
=(600-2)(600+2)-(600-1)2
=6002-4-6002+1200-1
=1195.