Question Number 38562 by shakirhsp@gmail.com last updated on 27/Jun/18
$$\left(\sqrt{\mathrm{2}}\:+{i}\right)\left(\mathrm{1}−\sqrt{\mathrm{2}{i}}\:\right) \\ $$
Answered by MJS last updated on 27/Jun/18
$$\left(\sqrt{\mathrm{2}}+\mathrm{i}\right)\left(\mathrm{1}−\sqrt{\mathrm{2i}}\right)=\left(\sqrt{\mathrm{2}}+\mathrm{i}\right)\left(\mathrm{1}−\left(\mathrm{1}+\mathrm{i}\right)\right)= \\ $$$$=\left(\sqrt{\mathrm{2}}+\mathrm{i}\right)\left(−\mathrm{i}\right)=\mathrm{1}−\mathrm{i}\sqrt{\mathrm{2}} \\ $$$$\left(\sqrt{\mathrm{2}}+\mathrm{i}\right)\left(\mathrm{1}−\sqrt{\mathrm{2}}\mathrm{i}\right)=\sqrt{\mathrm{2}}−\mathrm{2i}+\mathrm{i}+\sqrt{\mathrm{2}}=\mathrm{2}\sqrt{\mathrm{2}}−\mathrm{i} \\ $$
Commented by shakirhsp@gmail.com last updated on 04/Jul/18
$$ \\ $$$$ \\ $$$$ \\ $$$$\mathrm{thanks}\:\mathrm{brother} \\ $$$$ \\ $$