bài 1, tính
a, \(-0.8x\sqrt{\left(-0.125\right)^2}\)
\(\sqrt{\left(-2\right)^6}\)
\(\sqrt{\left(\sqrt{3}-2\right)^2}\)
\(\sqrt{\left(2\sqrt{2}-3\right)^2}\)
b, \(\sqrt{\left(\dfrac{1}{12}-\dfrac{1}{13}\right)^2};\sqrt{\left(0.1-\sqrt{0.1}\right)^2};\sqrt{4-2\sqrt{3}}\)
c,\(\sqrt{3+2\sqrt{2};\sqrt{9-4\sqrt{5}};\sqrt{16-6\sqrt{7}}}\)
a: \(-0.8\cdot\sqrt{\left(-0.125\right)^2}=\dfrac{-4}{5}\cdot\dfrac{5}{4}=-1\)
\(\sqrt{\left(-2\right)^6}=\left|\left(-2\right)^3\right|=8\)
\(\sqrt{\left(\sqrt{3}-2\right)^2}=2-\sqrt{3}\)
b: \(\sqrt{\left(\dfrac{1}{12}-\dfrac{1}{13}\right)^2}=\dfrac{1}{156}\)
\(\sqrt{4-2\sqrt{3}}=\sqrt{3}-1\)
c: \(\sqrt{3+2\sqrt{2}}=\sqrt{2}+1\)
\(\sqrt{9-4\sqrt{5}}=\sqrt{5}-2\)
\(\sqrt{16-6\sqrt{7}}=3-\sqrt{7}\)
