问题
解答题
计算:(1)
|
答案
(1)
+2a a+1
;2 a+1
=
,2a+2 a+1
=
,2(a+1) a+1
=2;
(2)(
)3÷pq 2r
+2p r2
,1 2q
=
×p3q3 8r3
+r2 2p
,1 2q
=
+p2q3 16r
,1 2q
=
.p2q4+8r 16rq
计算:(1)
|
(1)
+2a a+1
;2 a+1
=
,2a+2 a+1
=
,2(a+1) a+1
=2;
(2)(
)3÷pq 2r
+2p r2
,1 2q
=
×p3q3 8r3
+r2 2p
,1 2q
=
+p2q3 16r
,1 2q
=
.p2q4+8r 16rq