Express the equation `z^ 4 = −2 + 2sqrt3i` in polar form. (solve the equation, expressing your answers in polar form.)

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`z^4 = -2+2sqrt3 i`

The polar form of complex number `x + yi` is  `r ( cos theta + i sin theta)`

where `r = sqrt(x^2+y^2) `   and  `theta = tan^(-1) y/x` .  

Base on the given complex number, `x=-2` and `y=...

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