Question

\(\sqrt{9-4\sqrt{5}}\)

Answer 1

\(\sqrt{9-4\sqrt{5}}=\sqrt{5-2\cdot\sqrt{5}\cdot2+4}=\sqrt{\left(\sqrt{5}-2\right)^2}=\sqrt{5}-2\\ \)

Answer 2

\(\sqrt{9-4\sqrt{5}=0.23606}\)

Answer 3

\(\sqrt{9-4\sqrt{5}}=\sqrt{\left(\sqrt{5}-2\right)^2}=\left|\sqrt{5}-2\right|=\sqrt{5}-2\)

(Nhớ k cho mình với nhoa!)

Answer 4

√9−4√5 =0,2360679775

Answer 5

thank