Question

simplifique √5•√8•√40

Answer 1

$\sqrt{5} .~ \sqrt{8}.~ \sqrt{40} \\ \\ \sqrt{5} .~ \sqrt{2^3}.~ \sqrt{2^3 . 5} \\ \\ \sqrt{5} .~ 2\sqrt{2}.~2 \sqrt{10} \\ \\ 2 \sqrt{10}. ~2 \sqrt{10} \\ \\ 2 . 2 . (\sqrt{10})^2 \\ \\ 4 . 10 =\ \textgreater \ 40$