Question

If (4+ 21) (1 +2i) = A +iB then
1) A=0
2) B=10
3) A=10
4) B=0​

Answer 1

Answer:

Step-by-step explanation:

If z = a + ib is the complex number, then a and b are called real and imaginary ... 1. + (z. 2. + z. 3. ) 4. For any complex number z = x + i y, there exist 0, ... 5.1.10 Properties of modulus of a complex number ... (1 – i)3 = 1 – i3 – 3i + 3i2 = 1 + i – 3i – 3 = – 2 – 2i ...