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\frac{\left(1+2i\right)\left(1+2i\right)}{\left(1-2i\right)\left(1+2i\right)}
Ham hisoblagich, ham maxrajni maxraj kompleksiga murakkablash orqali ko'paytirish, 1+2i.
\frac{\left(1+2i\right)\left(1+2i\right)}{1^{2}-2^{2}i^{2}}
Ko‘paytirish qoida yordamida turli kvadratlarga aylantirilishi mumkin: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
\frac{\left(1+2i\right)\left(1+2i\right)}{5}
Ta’rifi bo‘yicha, i^{2} – bu -1. Maxrajini hisoblang.
\frac{1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2i^{2}}{5}
Binomlarni ko‘paytirgandek 1+2i va 1+2i murakkab sonlarni ko‘paytiring.
\frac{1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2\left(-1\right)}{5}
Ta’rifi bo‘yicha, i^{2} – bu -1.
\frac{1+2i+2i-4}{5}
1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2\left(-1\right) ichidagi ko‘paytirishlarni bajaring.
\frac{1-4+\left(2+2\right)i}{5}
1+2i+2i-4 ichida real va mavhum qismlarni birlashtiring.
\frac{-3+4i}{5}
1-4+\left(2+2\right)i ichida qo‘shishlarni bajaring.
-\frac{3}{5}+\frac{4}{5}i
-\frac{3}{5}+\frac{4}{5}i ni olish uchun -3+4i ni 5 ga bo‘ling.
Re(\frac{\left(1+2i\right)\left(1+2i\right)}{\left(1-2i\right)\left(1+2i\right)})
\frac{1+2i}{1-2i}ning surat va maxrajini murakkab tutash maxraj 1+2i bilan ko‘paytiring.
Re(\frac{\left(1+2i\right)\left(1+2i\right)}{1^{2}-2^{2}i^{2}})
Ko‘paytirish qoida yordamida turli kvadratlarga aylantirilishi mumkin: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}.
Re(\frac{\left(1+2i\right)\left(1+2i\right)}{5})
Ta’rifi bo‘yicha, i^{2} – bu -1. Maxrajini hisoblang.
Re(\frac{1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2i^{2}}{5})
Binomlarni ko‘paytirgandek 1+2i va 1+2i murakkab sonlarni ko‘paytiring.
Re(\frac{1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2\left(-1\right)}{5})
Ta’rifi bo‘yicha, i^{2} – bu -1.
Re(\frac{1+2i+2i-4}{5})
1\times 1+1\times \left(2i\right)+2i\times 1+2\times 2\left(-1\right) ichidagi ko‘paytirishlarni bajaring.
Re(\frac{1-4+\left(2+2\right)i}{5})
1+2i+2i-4 ichida real va mavhum qismlarni birlashtiring.
Re(\frac{-3+4i}{5})
1-4+\left(2+2\right)i ichida qo‘shishlarni bajaring.
Re(-\frac{3}{5}+\frac{4}{5}i)
-\frac{3}{5}+\frac{4}{5}i ni olish uchun -3+4i ni 5 ga bo‘ling.
-\frac{3}{5}
-\frac{3}{5}+\frac{4}{5}i ning real qismi – -\frac{3}{5}.