Question

answer question plz bai​

Answer 1

Answer:

4

Step-by-step explanation:

1)simplify the radical like

2/—45=6/—5

2)simplify the radical like

3/—20=6/—5

3)collect terms like

6/—5+6/—5=12/—5

4)cut the number 5 from both denominator and numerator like

Answer 2

Answer:

$2 \sqrt{45} + 3 \sqrt{20} \div 3 \sqrt{5} = 6 \sqrt{5} + 6 \sqrt{5} \div 3 \sqrt{5} \\ 3 \sqrt{5} (2 + 2) \div 3 \sqrt{5} \\ = 4$