Mathematics · Complex Numbers
If z = 1 + 3i is a root of a quadratic polynomial with real coefficients, find the polynomial.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1z2 + 2z + 20
- 2z2 - 2z + 10✓
- 3z2 - 2z - 10
- 4z2 + 2z + 10
Correct answer
z2 - 2z + 10
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