Question

$\sqrt{45} + 3 \sqrt{20} + 4 \sqrt{5}$
​

Answer 1

Answer:

13√5

Step-by-step explanation:

√45 = √(3.3.5) = 3√5

and

3√20 = 3√(2.2.5) = 3.2√5 = 6√5

[Here, '.' means multiplied by]

∴ √45 + 3√20 + 4√5 = 3√5 + 6√5 + 4√5 = 13√5

******************END OF SOLUTION********************