
计算:(1)3×6-2×6(2)2(2+3)-3(2?27)(3)(3?5)2(4)(3+1)(3?2)
计算:(1)3×6-2×6(2)2(2+3)-3(2?27)(3)(3?5)2(4)(3+1)(3?2)....
计算:(1)3×6-2×6(2)2(2+3)-3(2?27)(3)(3?5)2(4)(3+1)(3?2).
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(1)原式=3
-2
.
(2)原式=2
+2
-3
+9
=-
+11
.
(3)原式=3-2
+5
=8-2
.
(4)原式=3-2
+
-2
=1-
.
2 |
3 |
(2)原式=2
2 |
3 |
2 |
3 |
=-
2 |
3 |
(3)原式=3-2
15 |
=8-2
15 |
(4)原式=3-2
3 |
3 |
=1-
3 |
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