Answer
$$i(ix+iz)=i^2x+i^2z$$
Explanation
| $$ \begin{aligned}i(ix+iz)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}i^2x+i^2z\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{i} $ by $ \left( ix+iz\right) $ $$ \color{blue}{i} \cdot \left( ix+iz\right) = i^2x+i^2z $$ |
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