问题
解答题
算: (1)11+(-22)-3×(-11); (2)-3
(3)[(-1)2005-(
(4)-4ab+8-2b2-9ab-8; (5)
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答案
(1)原式=11-22+33=22
(2)原式=-
+13 4
-1 9
+27 4
=-817 9
(3)原式=-1-
×24×(-18-4-9 24
)=-1 4 3 2
(4)原式=-13ab-2b2
(5)原式=
a-1 3
a+4b+6c-6c+6b=-1 2
a+10b.1 6