i need help with this problem

Question

2�ã20x + 3�ã5x

Answer 1

I do not understand your symbol but suspect it is square root sign
If so then

2 sqrt (20 x) + 3 sqrt (5x)

2 sqrt (4*5 x) + 3 sqrt (5x)

4 sqrt (5 x) + 3 sqrt (5x)

7 sqrt (5 x)