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Pre-University - III
3. Show that the points representing the complex numbers 7+9i, -3-7i, and 3+3i form a right-angled triangle on the Argand plane.
4. Solve completely
5. If , prove that
6. State and prove De Moivre's theorem.
7. Find all the values of
8. Solve the equation
given that (2-i) is a root of the equation.
10. Find the conjugate of
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