Question
Answer
$$\dfrac{1}{sqrt\cdot(1+2i)}=\dfrac{1}{qrst+2iqrst}$$
Explanation
| $$ \begin{aligned}\frac{1}{sqrt\cdot(1+2i)}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{1}{qrst+2iqrst}\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{qrst} $ by $ \left( 1+2i\right) $ $$ \color{blue}{qrst} \cdot \left( 1+2i\right) = qrst+2iqrst $$ |
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