Home › CBSE Class 11 (Commerce) › Mathematics › Complex Numbers and Quadratic Equations › Divide (6 + 3i) by (2 - i) and give the quotient.
Divide (6 + 3i) by (2 - i) and give the quotient.
A(12 + 9i)/5
B(9 + 12i)/5
C(15 + 12i)/5
D(9 + 12i)/3
Answer & Solution
Correct answer: B. (9 + 12i)/5
Multiply by the conjugate 2 + i to get (12 + 6i + 6i - 3)/5 = (9 + 12i)/5.
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