If v = z(1)^6* z(2)^−4

determine |v| and angle(v). Also, obtain v in cartesian form.

where z1= 3 +i

z2 = -5 + 5i

I don't know how to raise a complex power to a power. I have searched all over but nothing online makes sense.

Please help me. Thanks!

So far I have done |(√10)^6 * (5√2)^-4| = .4

If that is correct please explain how to solve for angles.