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Mathematics 7 Online
OpenStudy (babynini):

Rewrite result in form a+bi

OpenStudy (babynini):

[5(sq2)]/4*(cos(5pi/4)+isin(5pi/4))

OpenStudy (babynini):

= [(5(sq2))/4]*(-rt2/2 - i rt2/2)

OpenStudy (babynini):

that is way confusing. sorry haha i'll write it in equation form xD \[\frac{ 5\sqrt{2} }{ 4 }(\frac{ -\sqrt{2} }{ 2 }-i \frac{ \sqrt{2} }{ 2 })\]

zepdrix (zepdrix):

so multiply in the stuff :D just like last time!

zepdrix (zepdrix):

\[\Large\rm \frac{5\sqrt2}{4}\cdot\frac{\sqrt2}{2}=\frac{5}{4}\cdot\frac{\sqrt2\sqrt2}{2}=\frac{5}{4}\cdot\frac{2}{2}=\frac{5}{4}\]

OpenStudy (babynini):

(-10/8)-(10/8)i

zepdrix (zepdrix):

simplifyyyy :U

OpenStudy (babynini):

5/4

zepdrix (zepdrix):

cool c:

OpenStudy (babynini):

:)

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