Question

please give me answer​

Answer 1

Answer:

Your answer will be

Step-by-step explanation:

√45 = 3√5

√20 = 2√5

therefore

3√5-3×3√5+4√5

7√5-9√5

-2√5

Answer 2

Answer:

√5 Ans.

Step-by-step explanation:

First step : √45 - 3√20 + 4√5

Second step: 3√5 -3*2√5 +4√5 

Third step: 3√5-6√5+4√5

Fourth step: (3-6+4)√5 

Fifth step: (-3+4)√5

Answer= √5

Hope it helps :)