问题
解答题
计算:(1)(4
(2)(-1)2008+(-3)2×|-
|
答案
(1)原式=(
-14 3
+7 2
)×(-49 48
)6 7
=-(
×14 3
-6 7
×7 2
+6 7
×49 48
)6 7
=-(4-3+
)7 8
=-
;15 8
(2)原式=1+9×
-(-64)÷(-32)1 8
=1+
-29 8
=
.1 8
计算:(1)(4
(2)(-1)2008+(-3)2×|-
|
(1)原式=(
-14 3
+7 2
)×(-49 48
)6 7
=-(
×14 3
-6 7
×7 2
+6 7
×49 48
)6 7
=-(4-3+
)7 8
=-
;15 8
(2)原式=1+9×
-(-64)÷(-32)1 8
=1+
-29 8
=
.1 8