化简：根号32减二乘以根号50加四分之一乘以根号二分之一减根号八分之一
√32－2√50＋1/4√1/2－√1-8
人气：106 ℃ 时间：2019-10-24 11:28:41
解答
√32－2√50＋1/4√1/2－√1/8
=4√2-10√2+1/8√2-1/4√2
=(-49/8)√2
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