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OpenStudy (loser66):
Someone explains me, please
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OpenStudy (loser66):
OpenStudy (loser66):
I don't understand how to go from line2 to line 3 like that: \[2x_1\bar x_1+i\bar x_1x_2-ix_1\bar x_2+2x_2\bar x_2\\=x_1\bar x_1+(x_1+ix_2)(\overline{(x_1+ix_2)}+x_2\bar x_2\]
OpenStudy (anonymous):
|dw:1397399421277:dw|
OpenStudy (anonymous):
ok now ?
OpenStudy (loser66):
|dw:1397413274867:dw|
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