Answer:
29i
Explanation:
While multiplying complex numbers we should remember that i^2=−1.
As p=2 and q=5i,
(2−5i)(p+q)i
= (2−5i)(2+5i)i
= (2×2+2×5i−5i×2−5i×5i)×i
= (4+10i−10i−25×i2)×i
= (4+10i−10i−25×(−1))×i
= (4+25)×i
=29i
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