Find all (real or complex) numbers z1 and z2 such that z1 +z2 = -20 z1z2 = 29. Enter the roots as a…

Find all (real or complex) numbers z1 and z2 such that z1 +z2 = -20 z1z2 = 29. Enter the roots as a comma-separated list of values of the form a+bi. Find the principal arguments phi (in radians) of all 4th roots of a complex number having principal argument theta = 4/13 pie radians.

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