Write wheather 2√45+2√20/2√5 on simplification gives a rational or an irrational number

Write wheather 2√45+2√20/2√5 on simplification gives a rational

1.	Write wheather 2√45+2√20/2√5 on simplification gives a rational or an irrational number
Answer» 2√45+2√20/2√52√3×3×5 + 2√2×2×5/2√52×3√5 + 2×2√5/2√56√5 + 4√5/2√5= 10√5/2√55hence it is rational number