若4a=2,4b=3,则42a+b的值为_____ .
更新时间:2020-03-06 18:00:36
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【推荐1】计算:(1)
=__________ ;
(2)
=_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c05cfae727be07b1a61f54f1c8e8ee1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d1af8b1f2d025d3bce78f9ec8f0b284.png)
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填空题
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较易
(0.85)
【推荐2】计算:(1)
_____ (2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80429ad64773e558c031788170f8b962.png)
_____
(3)若
,
,则
=______ (4)
,
,则
=_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0750e34a1391514119472eb85834be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80429ad64773e558c031788170f8b962.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d44cf9e670add1bd7dfdece5010e8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ef41a5b1dca0d656501523ee58c504.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a2fb22bd6ff351494e947ac3741d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e9bd08eb7a845eaa9a381ac23b4493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7969cda7163e136da7503f181107d210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5779097f9d3486fbb8957416beee0829.png)
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