Mathematics Complex Numbers Properties of Complex Numbers

Let z1 and z2 be two complex number such that z1 + z2 = 5 and \(\rm z_1^3+z_2^3=20+15i\). Then \(\rm |z_1^4+z_2^4|\) equals.

1
30√3
2
75
3
\(15\sqrt{15}\)
4
25√3

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