Simplify square root of five times square root of eight.1. two square root of ten2. four square root of ten3. square root of forty4. square root of thirteen

Answer:1. two square root of tenStep-by-step explanation:Given expression is:[tex]\[\sqrt{5}* \sqrt{8}\][/tex]Simplifying the expression:[tex]\[\sqrt{5}* \sqrt{4 \ast 2}\][/tex]= [tex]\[\sqrt{5}* \sqrt{4}*\sqrt{2}\][/tex]= [tex]\[\sqrt{5}* 2*\sqrt{2}\][/tex]= [tex]\[2 * \sqrt{5} * \sqrt{2}\][/tex]= [tex]\[2 * \sqrt{10}\][/tex]So among the given options, option 1 is the correct one,namely, two square root of ten.