化简 根号5+2乘根号3-1分之根号15-根号5-根号3+3.,根号7 + 2根号6 + 根号5--------------------------------------- 化简。中间是分数线 2根号6是2乘以根号6根号30 + 6 +根号35 +根号42
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![化简 根号5+2乘根号3-1分之根号15-根号5-根号3+3.,根号7 + 2根号6 + 根号5--------------------------------------- 化简。中间是分数线 2根号6是2乘以根号6根号30 + 6 +根号35 +根号42](/uploads/image/z/201920-32-0.jpg?t=%E5%8C%96%E7%AE%80+%E6%A0%B9%E5%8F%B75%2B2%E4%B9%98%E6%A0%B9%E5%8F%B73-1%E5%88%86%E4%B9%8B%E6%A0%B9%E5%8F%B715-%E6%A0%B9%E5%8F%B75-%E6%A0%B9%E5%8F%B73%2B3.%2C%E6%A0%B9%E5%8F%B77+%2B+2%E6%A0%B9%E5%8F%B76+%2B+%E6%A0%B9%E5%8F%B75---------------------------------------+%E5%8C%96%E7%AE%80%E3%80%82%E4%B8%AD%E9%97%B4%E6%98%AF%E5%88%86%E6%95%B0%E7%BA%BF+2%E6%A0%B9%E5%8F%B76%E6%98%AF2%E4%B9%98%E4%BB%A5%E6%A0%B9%E5%8F%B76%E6%A0%B9%E5%8F%B730+%2B+6+%2B%E6%A0%B9%E5%8F%B735+%2B%E6%A0%B9%E5%8F%B742)
化简 根号5+2乘根号3-1分之根号15-根号5-根号3+3.,根号7 + 2根号6 + 根号5--------------------------------------- 化简。中间是分数线 2根号6是2乘以根号6根号30 + 6 +根号35 +根号42
化简 根号5+2乘根号3-1分之根号15-根号5-根号3+3.,
根号7 + 2根号6 + 根号5
--------------------------------------- 化简。中间是分数线 2根号6是2乘以根号6
根号30 + 6 +根号35 +根号42
化简 根号5+2乘根号3-1分之根号15-根号5-根号3+3.,根号7 + 2根号6 + 根号5--------------------------------------- 化简。中间是分数线 2根号6是2乘以根号6根号30 + 6 +根号35 +根号42
原式=根号5+根号15*(2根号3+1)/(12-1)-根号5-根号3+3
=6根号5/11+根号15/11-根号3+3
1分之根号15是(1/根号15)吗?
看不懂 别用汉字描述啊!
√7+2√6+√5=(√7+√6)+(√6+√5)
√30+√35+6+√42=√5·√6+√5·√7+√6·√6+√6·√7=√5(√6+√7)+√6(√6+√7)=(√5+√6)(√6+√7)
(√30+√35+6+√42)\(√7+2√6+√5)=(√5+√6)(√6+√7)\[(√6+√7)+(√6+√5)]=(√5+√6)\1+(√6+√7)\1=
√6-√5+√...
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√7+2√6+√5=(√7+√6)+(√6+√5)
√30+√35+6+√42=√5·√6+√5·√7+√6·√6+√6·√7=√5(√6+√7)+√6(√6+√7)=(√5+√6)(√6+√7)
(√30+√35+6+√42)\(√7+2√6+√5)=(√5+√6)(√6+√7)\[(√6+√7)+(√6+√5)]=(√5+√6)\1+(√6+√7)\1=
√6-√5+√7-√6=√7-√5
收起