Answer:
[tex]s^{23}t^{10}u^7[/tex]
Explanation:
We want to simplify the expression:
[tex]\begin{gathered} s^{23}tu^0\cdot s^{0_{}}t^9u^7 \\ \text{rearranging, we have;} \\ s^{23}\times s^0\times t\times t^9\times u^0\times u^7 \end{gathered}[/tex]
applying the laws of indices;
[tex]\begin{gathered} s^{23+0}\times t^{1+9}\times u^{0+7} \\ =s^{23}\times t^{10}\times u^7 \\ =s^{23}t^{10}u^7 \end{gathered}[/tex]
In a single term, the expression becomes;
[tex]s^{23}t^{10}u^7[/tex]
