(√12+5倍√8）√3；（√48+1/2倍√3/ - 知识问答

(√12+5倍√8）√3；（√48+1/2倍√3/2）÷√27；√4x×（√3x/2-√x/6）；（x√y-y倍√x）÷

1个回答

(√12+5√8)√3
= 6 + 10√6
(√48 +√3/4) /√27
= (4√3 +√3/4) /(3√3)
= 4/3 +1/12
= 16/12 +1/12
= 17/12
√(4x)[√(3x)/2-√x/6]
= √(8/3)-√(2/3)
= √8√3/3 -√6/ 3
= 2√6/3 -√6/ 3
= √6/3
(x√y - y√x) / √(xy)
= √x - √y

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