Question

Numbers are -3 square root 15 ( square root 5+2)

Answer 1

Solve the surds form below

`-3√(15)(√(5)+2)`

Step 1:

`\begin{gathered} -3√(15)(√(5)+2) \\ Applying\text{ distributive rule} \\ -3√(15).√(5)-3√(15)(2) \end{gathered}`

Step 2 :

Simplify

`\begin{gathered} -3√(75)-6√(15) \\ -3(5)√(3)-6√(15) \\ -15√(3)-6√(15) \end{gathered}`

Hence the final answer is

`-(15√(3)+6√(15))`