Question

Please help me solve. blank I have 9 and blank 2 I have 5. blank 2 is correct but not blank 1.

Answer 1

We have that

`\begin{gathered} 3\cdot\sqrt[]{45}=3\cdot(\sqrt[]{9\cdot5}) \\ =\text{ 3(}\sqrt[]{9}\cdot\sqrt[]{5}\text{)} \\ =\text{ 3(3 }\cdot\sqrt[]{5}) \\ =9\cdot\sqrt[]{5} \end{gathered}`

So the answer is

`9\cdot\sqrt[]{5}`