Respuesta :

WeatheringWithYou
Simplify [tex]6 \sqrt{45} [/tex], as there is 9 as a factor. The new form is [tex]18 \sqrt{5} .[/tex] 

Then, add 18 and 3 to get [tex]21 \sqrt{5} [/tex]
The correct answer is B. 

Answer:

D) 21√(5)

Step-by-step explanation:

Pull terms out from under the radical, assuming positive real numbers.