For $\vec{q}=-3 \vec{i}+\vec{j}-3 \vec{k}$ and $\vec{r}=-2 \vec{i}-3 \vec{j}+\vec{k}$, what is $((\vec{r} \cdot \vec{q}) \vec{r}) \cdot \vec{q}$ ?

Name: For $\vec{q}=-3 \vec{i}+\vec{j}-3 \vec{k}$ and $\vec{r}=-2 \vec{i}-3 \vec{j}+\vec{k}$, what is $((\vec{r} \cdot \vec{q}) \vec{r}) \cdot \vec{q}$ ?
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The Answer of For $\vec{q}=-3 \vec{i}+\vec{j}-3 \vec{k}$ and $\vec{r}=-2 \vec{i}-3 \vec{j}+\vec{k}$, what is $((\vec{r} \cdot \vec{q}) \vec{r}) \cdot \vec{q}$ ?

For q⃗=−3i⃗+j⃗−3k⃗\vec{q}=-3 \vec{i}+\vec{j}-3 \vec{k}q​=−3i+j​−3k And r⃗=−2i⃗−3j⃗+k⃗\vec{r}=-2 \vec{i}-3 \vec{j}+\vec{k}r=−2i−3j​+k , What Is ((r⃗⋅q⃗)r⃗)⋅q⃗((\vec{r} \cdot \vec{q}) \vec{r}) \cdot \vec{q}((r⋅q​)r)⋅q​

For $\vec{q}=-3 \vec{i}+\vec{j}-3 \vec{k}$ And $\vec{r}=-2 \vec{i}-3 \vec{j}+\vec{k}$ , What Is $((\vec{r} \cdot \vec{q}) \vec{r}) \cdot \vec{q}$