问题
解答题
计算 (1)
(2)
|
答案
(1)原式=
÷10 3 2 5
×47 3 7 5
=1×
×4×5 2
×10 3
×3 7 7 5
=10
;2
(2)原式=
x•32 3
-x3•x
+6x•x x2 x 2
=2x
-xx
+3xx x
=4x
.x
计算 (1)
(2)
|
(1)原式=
÷10 3 2 5
×47 3 7 5
=1×
×4×5 2
×10 3
×3 7 7 5
=10
;2
(2)原式=
x•32 3
-x3•x
+6x•x x2 x 2
=2x
-xx
+3xx x
=4x
.x