我这些题目不会 求大神指导T^T 感谢一辈子
2分之1根号3+根号5-3分之1根号3=?2根号5/根号5分之3×3根号5=?(2根号2+3分之根号2)/3根号2=?【(根号2)的三次方+2-4根号2】/根号2=?根号...
2分之1根号3+根号5-3分之1根号3=? 2根号5/根号5分之3×3根号5=? (2根号2+3分之根号2)/3根号2=? 【(根号2)的三次方+2-4根号2】/根号2=? 根号2×(根号5-3根号5)/2根号5=? 根号5/根号3的平方+根号5的三次方/根号5的平方=? 求大神啊 不用过程的T^T
展开
1个回答
展开全部
2分之1根号3+根号5-3分之1根号3
=√3/2+√5-√3/3
=√3/2-√3/3+√5
=3√3/6-2√3/6+√5
=√3/6+√5
还需要具体数值吗?
2根号5/根号5分之3×3根号5
=2√5/(3/√5)x3√5
=2√5x(√5/3)x3√5
=2√5x5
=10√5
(2根号2+3分之根号2)/3根号2
=(2√2+√2/3)/(3√2)
=2√2x3√2+√2/3x3√2
=6x2+2
=12+2
=14
[(√2)³+2-4√2]/√2
=[2√2+2-4√2]/√2
=[2-4√2]x√2/2
=2x√2/2-4√2x√2/2
=√2-2x2
=√2-4
根号2×(根号5-3根号5)/2根号5
=√2×(√5-3√5)/(2√5)
=√2×(-2√5)x(√5/10)
=-2√10x√5/10
=-√50/5
=-5√2/5
=-√2
根号5/根号3的平方+根号5的三次方/根号5的平方
=√5/√3的平方+√5的三次方/√5的平方
=√5/3+5√5/5
=√5/3+√5
=4√5/3
=√3/2+√5-√3/3
=√3/2-√3/3+√5
=3√3/6-2√3/6+√5
=√3/6+√5
还需要具体数值吗?
2根号5/根号5分之3×3根号5
=2√5/(3/√5)x3√5
=2√5x(√5/3)x3√5
=2√5x5
=10√5
(2根号2+3分之根号2)/3根号2
=(2√2+√2/3)/(3√2)
=2√2x3√2+√2/3x3√2
=6x2+2
=12+2
=14
[(√2)³+2-4√2]/√2
=[2√2+2-4√2]/√2
=[2-4√2]x√2/2
=2x√2/2-4√2x√2/2
=√2-2x2
=√2-4
根号2×(根号5-3根号5)/2根号5
=√2×(√5-3√5)/(2√5)
=√2×(-2√5)x(√5/10)
=-2√10x√5/10
=-√50/5
=-5√2/5
=-√2
根号5/根号3的平方+根号5的三次方/根号5的平方
=√5/√3的平方+√5的三次方/√5的平方
=√5/3+5√5/5
=√5/3+√5
=4√5/3
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询