Thực hiện các phép tính
a)\(2\sqrt{75}-3\sqrt{27}-\frac{1}{4}\sqrt{192}\) b)\(\sqrt{4+2\sqrt{3}}+\sqrt{{{\left( \sqrt{3}-2 \right)}^{2}}}\)
c)\(\frac{\sqrt{15}-\sqrt{12}}{\sqrt{5}-2}-\frac{1}{2-\sqrt{3}}\) d) \(\left( \frac{\sqrt{x}-2}{\sqrt{x}+2}-\frac{\sqrt{x}+2}{\sqrt{x}-2} \right).\left( \sqrt{x}-\frac{4}{\sqrt{x}} \right)\left( x>0;x\ne 4 \right)\)
A.a) \(-\sqrt{3}\) b) \(3\)
c) \(-2\) d) \(-8\)
B.a) \(-\sqrt{3}\) b) \(12\)
c) \(-2\) d) \(-5\)
C.a) \(-\sqrt{2}\) b) \(3\)
c) \(-6\) d) \(-8\)
D.a) \(-\sqrt{2}\) b) \(4\)
c) \(-8\) d) \(-8\)
a)\(2\sqrt{75}-3\sqrt{27}-\frac{1}{4}\sqrt{192}\) b)\(\sqrt{4+2\sqrt{3}}+\sqrt{{{\left( \sqrt{3}-2 \right)}^{2}}}\)
c)\(\frac{\sqrt{15}-\sqrt{12}}{\sqrt{5}-2}-\frac{1}{2-\sqrt{3}}\) d) \(\left( \frac{\sqrt{x}-2}{\sqrt{x}+2}-\frac{\sqrt{x}+2}{\sqrt{x}-2} \right).\left( \sqrt{x}-\frac{4}{\sqrt{x}} \right)\left( x>0;x\ne 4 \right)\)
A.a) \(-\sqrt{3}\) b) \(3\)
c) \(-2\) d) \(-8\)
B.a) \(-\sqrt{3}\) b) \(12\)
c) \(-2\) d) \(-5\)
C.a) \(-\sqrt{2}\) b) \(3\)
c) \(-6\) d) \(-8\)
D.a) \(-\sqrt{2}\) b) \(4\)
c) \(-8\) d) \(-8\)
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