Q. 15.0( 6 Votes )

Express each of the following in the form (a + ib) and find its conjugate.


(ii) (2 + 3i)2





Answer :

(i) Let

(ii) Let z = (2 + 3i)2 = (2 + 3i)(2 + 3i)

= 4 + 6i + 6i + 9i2

= 4 + 12i + 9i2

= 4 + 12i - 9

= - 5 + 12i

(iii) Let


(iv) Let

(v) Let

(vi) Let

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