Question

HELP ME PLEASE!!!!

Answer 1

`27=9\cdot3\\48=16\cdot3\\\\7√(27)+5√(48)=7√(9\cdot3)+5√(16\cdot3)=7\cdot\sqrt9\cdot\sqrt3+5\cdot√(16)\cdot\sqrt3\\\\=7\cdot3\cdot\sqrt3+5\cdot4\cdot\sqrt3=21\sqrt3+20\sqrt3=41\sqrt3\\\\\text{Used:}\ √(a\cdot b)=√(a)\cdot√(b)\\\\\text{Answer:}\ 41\sqrt3`