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The conjugate of the complex number z = 2 - 5i is:

A-2 - 5i
B-2 + 5i
C2 + 5i
D5 - 2i
Answer & Solution
Correct answer: C. 2 + 5i
For z = a + ib, conjugate z̄ = a - ib (flip the sign of the imaginary part). For 2 - 5i, the conjugate is 2 + 5i.
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