B 2. Thực hiện phép tính
a)\(\dfrac{\sqrt[3]{384}}{\sqrt[3]{3}}\)+\(3\sqrt[3]{-54}\)+\(\sqrt[3]{432}\) b)\(2\sqrt[3]{24}-5\sqrt[3]{81}+4\sqrt[3]{192}\)
c)\(\sqrt[3]{-343}.\sqrt[3]{3}+\sqrt[3]{81}-2\sqrt[3]{-24}\) d)\(8\sqrt[3]{5}-5\sqrt[3]{40}+10\sqrt[3]{\dfrac{1}{125}}\)
\(\sqrt{15-6\sqrt{6}}+\sqrt{3-12\sqrt{6}}\)
\(\sqrt{31-8\sqrt{15}}+\sqrt{24-6\sqrt{15}}\)
\(\sqrt{49-5\sqrt{96}}-\sqrt{49+5\sqrt{96}}\)
cần gấp
4) A = 3.\(\sqrt{2}\)+ 4.\(\sqrt{8}\)-\(\sqrt{18}\)
5) ( \(\sqrt{12}-\sqrt{48}-\sqrt{108}-\sqrt{192}\) ) :2\(\sqrt{3}\)
(√24 - √48) .√6 +12√2
\(\dfrac{6}{\sqrt{3}+3}+\dfrac{3}{\sqrt{3}}\)
giải giúp mk chi tiết hai câu này vớiiiiii ạ
Bài 1: Thực hiện phép tính:
a, \(\left(\sqrt{24}-\sqrt{48}-\sqrt{6}\right)\sqrt{6}+12\sqrt{2}\)
b, \(\left(\sqrt{\dfrac{1}{5}}-\sqrt{\dfrac{16}{5}}+\sqrt{5}\right):\sqrt{20}\)
c, \(\sqrt{21+3\sqrt{48}}-\sqrt{21-3\sqrt{48}}\)
Bài 2: Giải các phương trình sau:
a, \(\dfrac{1}{3}\sqrt{x-2}-\dfrac{2}{3}\sqrt{9x-18}+6\sqrt{\dfrac{x-2}{81}}=-4\)
b, \(\sqrt{9x^2+12x +4}=4x\)
c, \(\sqrt{x-2\sqrt{x-1}}=\sqrt{x-1}\)
GIÚP MIK VỚIIII
Thu gọn các biểu thức:
\(B=\sqrt{18-4\sqrt{15}-4\sqrt{3}+2\sqrt{5}}-\sqrt{13-4\sqrt{3}}\)
\(C=\sqrt{28+12\sqrt{2}-4\sqrt{6}-12\sqrt{3}}-\sqrt{18+\sqrt{128}-\sqrt{96}-2\sqrt{48}}\)
Rút Gọn
1.\(3\sqrt{3}+4\sqrt{12}-5\sqrt{27}\)
2.\(\sqrt{32}-\sqrt{50}+\sqrt{18}\)
3.\(\sqrt{72}+\sqrt{4\frac{1}{2}}-\sqrt{32}-\sqrt{162}\)
4.\(\left(\sqrt{325}-\sqrt{117}+2\sqrt{208}\right):\sqrt{13}\)
5.\(\left(\sqrt{12}-\sqrt{48}-\sqrt{108}-\sqrt{192}\right):2\sqrt{3}\)
6.\(\left(2\sqrt{112}-5\sqrt{7}+2\sqrt{63}-2\sqrt{28}\right)\sqrt{7}\)
7.\(\left(2\sqrt{27}-3\sqrt{48}+3\sqrt{75}-\sqrt{192}\right)\left(1-\sqrt{3}\right)\)
8.\(7\sqrt{24}-\sqrt{150}-5\sqrt{54}\)
9.\(2\sqrt{20}-\sqrt{50}+3\sqrt{80}-\sqrt{320}\)
10.\(\sqrt{32}-\sqrt{50}+\sqrt{98}-\sqrt{72}\)
11.\(3\sqrt{2}-4\sqrt{18}+2\sqrt{32}-\sqrt{50}\)
12.\(5\sqrt{48}-4\sqrt{27}-2\sqrt{75}+\sqrt{108}\)
13.\(2\sqrt{24}-2\sqrt{54}+3\sqrt{6}-\sqrt{150}\)
14.\(\sqrt{125}-2\sqrt{20}-3\sqrt{80}+4\sqrt{45}\)
15.\(2\sqrt{28}+2\sqrt{63}-3\sqrt{175}+\sqrt{112}\)
16.\(10\sqrt{28}-2\sqrt{275}-3\sqrt{343}-\frac{3}{2}\sqrt{396}\)
Tính:
\(\sqrt[3]{48}-\sqrt[3]{384}+\sqrt[3]{162}\)
Tìm a;b;c;d biết chúng đều là số nguyên tố và tích của chúng là 3069