1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

RS Aggarwal - Mathematics

5. Complex Numbers and Quadratic Equations

Exercise 5A

1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15

Exercise 5B

1 A 1 B 1 C 1 D 1 E 1 F 1 G 1 H 2 A 2 B 2 C 2 D 2 E 2 F 2 G 2 H 2 I 3 A 3 B 3 C 3 D 3 E 3 F 3 G 3 H 3 I 4 5 6 7 8 9 A 9 B 9 C 9 D 9 E 9 F 9 G 9 H 10 A 10 B 10 C 10 D 10 E 10 F 10 G 10 H 11 A 11 B 11 C 11 D 12 13 14 15 16 17 18 19 20 21 A 21 B 21 C 21 D 21 E 21 F 22 23 24 25 26 27 28

Exercise 5C

1 2 3 4 5 6 7 8 9 10 11 12

Exercise 5D

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Exercise 5E

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Exercise 5F

1 2 3 4 5 6 7 8 9 10 11 12 1 14

Exercise 5G

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Q. 113.9( 7 Votes )

Express (2 – 3i)<

Class 11th RS Aggarwal - Mathematics 5. Complex Numbers and Quadratic Equations

Answer :

we have, (2 – 3i)³

= 2³ – 3 × 2² × 3i – 3 × 2 × (3i)² – (3i)³

= 8 – 36i + 54 + 27i

= 46 - 9i.

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