Enrhifo
-\frac{4}{5}+2i=-0.8+2i
Rhan Real
-\frac{4}{5} = -0.8
Rhannu
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\left(\frac{3}{3}-\frac{1}{3}\right)\left(-\frac{6}{5}+3i\right)
Troswch y rhif degol 1 i’r ffracsiwn \frac{3}{3}.
\frac{3-1}{3}\left(-\frac{6}{5}+3i\right)
Gan fod gan \frac{3}{3} a \frac{1}{3} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{2}{3}\left(-\frac{6}{5}+3i\right)
Tynnu 1 o 3 i gael 2.
\frac{2}{3}\left(-\frac{6}{5}\right)+\frac{2}{3}\times \left(3i\right)
Lluoswch \frac{2}{3} â -\frac{6}{5}+3i.
-\frac{4}{5}+2i
Gwnewch y gwaith lluosi.
Re(\left(\frac{3}{3}-\frac{1}{3}\right)\left(-\frac{6}{5}+3i\right))
Troswch y rhif degol 1 i’r ffracsiwn \frac{3}{3}.
Re(\frac{3-1}{3}\left(-\frac{6}{5}+3i\right))
Gan fod gan \frac{3}{3} a \frac{1}{3} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
Re(\frac{2}{3}\left(-\frac{6}{5}+3i\right))
Tynnu 1 o 3 i gael 2.
Re(\frac{2}{3}\left(-\frac{6}{5}\right)+\frac{2}{3}\times \left(3i\right))
Lluoswch \frac{2}{3} â -\frac{6}{5}+3i.
Re(-\frac{4}{5}+2i)
Gwnewch y gwaith lluosi yn \frac{2}{3}\left(-\frac{6}{5}\right)+\frac{2}{3}\times \left(3i\right).
-\frac{4}{5}
Rhan real -\frac{4}{5}+2i yw -\frac{4}{5}.
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