急!6道数学题!高手来(1)已知实数a,b,c满足a+b+c+3=2[√a+√(b-1)+√(c+1)] 求:a^2+b^2+c^2的值(2)计算:(√5-5)/(√5-1)+(10-2√10)/(√10-2)+(√30-2√10)/(√6-2√2)(3)已知a为实数,化简:√(-a^3)-a√(-1/a)(4)已
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![急!6道数学题!高手来(1)已知实数a,b,c满足a+b+c+3=2[√a+√(b-1)+√(c+1)] 求:a^2+b^2+c^2的值(2)计算:(√5-5)/(√5-1)+(10-2√10)/(√10-2)+(√30-2√10)/(√6-2√2)(3)已知a为实数,化简:√(-a^3)-a√(-1/a)(4)已](/uploads/image/z/558681-33-1.jpg?t=%E6%80%A5%216%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%21%E9%AB%98%E6%89%8B%E6%9D%A5%281%29%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0a%2Cb%2Cc%E6%BB%A1%E8%B6%B3a%2Bb%2Bc%2B3%3D2%5B%E2%88%9Aa%2B%E2%88%9A%28b-1%29%2B%E2%88%9A%28c%2B1%29%5D+++++%E6%B1%82%EF%BC%9Aa%5E2%2Bb%5E2%2Bc%5E2%E7%9A%84%E5%80%BC%282%29%E8%AE%A1%E7%AE%97%EF%BC%9A%28%E2%88%9A5-5%29%2F%28%E2%88%9A5-1%29%2B%2810-2%E2%88%9A10%29%2F%28%E2%88%9A10-2%29%2B%28%E2%88%9A30-2%E2%88%9A10%29%2F%28%E2%88%9A6-2%E2%88%9A2%29%283%29%E5%B7%B2%E7%9F%A5a%E4%B8%BA%E5%AE%9E%E6%95%B0%2C%E5%8C%96%E7%AE%80%EF%BC%9A%E2%88%9A%28-a%5E3%29-a%E2%88%9A%28-1%2Fa%29%284%29%E5%B7%B2)
急!6道数学题!高手来(1)已知实数a,b,c满足a+b+c+3=2[√a+√(b-1)+√(c+1)] 求:a^2+b^2+c^2的值(2)计算:(√5-5)/(√5-1)+(10-2√10)/(√10-2)+(√30-2√10)/(√6-2√2)(3)已知a为实数,化简:√(-a^3)-a√(-1/a)(4)已
急!6道数学题!高手来
(1)已知实数a,b,c满足a+b+c+3=2[√a+√(b-1)+√(c+1)]
求:a^2+b^2+c^2的值
(2)计算:(√5-5)/(√5-1)+(10-2√10)/(√10-2)+(√30-2√10)/(√6-2√2)
(3)已知a为实数,化简:√(-a^3)-a√(-1/a)
(4)已知a,b,c是△ABC的三条边,化简:√[(a-b-c)^2]+√[(b-c-a)^2]+√[(c-a-b)^2]
(5)已知实数a,b,c满足a大于0,b小于0,c小于0,且|a|小于|b|小于|c|.
化简:√[(a+b)^2]+√[(c-a)^2]+√[(c-b)^2]
(6)已知实数a,b满足a+b=-8,ab=8
求:b√(b/a)+a√(a/b)的值(先化简,再求值)
以上题目都要详细过程!详细的话再给分!
急!6道数学题!高手来(1)已知实数a,b,c满足a+b+c+3=2[√a+√(b-1)+√(c+1)] 求:a^2+b^2+c^2的值(2)计算:(√5-5)/(√5-1)+(10-2√10)/(√10-2)+(√30-2√10)/(√6-2√2)(3)已知a为实数,化简:√(-a^3)-a√(-1/a)(4)已
1.可以化成(√a-1)^2+(√(b-1)-1)^2+(√(c+1)-1)^2=0证明三项各自全为0,则a=1,b=2
,c=0.可知...
2,应该就是化简吧,不想化了
3,a是负数,各自化简下-a√-a+√-a=(1-a)√a
就这样吧 ,也不知道对不对.自己去想吧