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Algebra 12 Online
OpenStudy (shaniehh):

can someone tell me what they did in the first part

OpenStudy (shaniehh):

Nnesha (nnesha):

distribute parentheses by outside term a(b+c)= a times b + a times c =ab+Ac

Nnesha (nnesha):

|dw:1443379802855:dw| multiplied both terms by -2i

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