Answer:
Option D: 5√5 is the correct answer.
Step-by-step explanation:
Given that:
√20 + √45
These can also be written in simplified form;
√5*4 + √5*9
We will take square root of 4 and 9.
The square root of 4 and 9 is,
√4 = 2
√9 = 3
Thus,
2√5 + 3√5
Adding the roots,
5√5
Hence,
Option D: 5√5 is the correct answer.
