Write the real and imaginary parts of the following complex numbers:
(i) `7+3i`
(ii) `0+7i`
(iii) `sqrt(5)+0i`

Answer

To find the real and imaginary parts of the given complex numbers, we will analyze each complex number in the standard form \( a + bi \), where \( a \) is the real part and \( b \) is the imaginary part.

### Step-by-Step Solution:

**(i) For the complex number \( 7 + 3i \):**

1. Identify the real part:
- The real part \( a \) is \( 7 \).

2. Identify the imaginary part:
- The imaginary part \( b \) is \( 3 \).

Thus, the real part is \( 7 \) and the imaginary part is \( 3 \).

**(ii) For the complex number \( 0 + 7i \):**

1. Identify the real part:
- The real part \( a \) is \( 0 \).

2. Identify the imaginary part:
- The imaginary part \( b \) is \( 7 \).

Thus, the real part is \( 0 \) and the imaginary part is \( 7 \).

**(iii) For the complex number \( \sqrt{5} + 0i \):**

1. Identify the real part:
- The real part \( a \) is \( \sqrt{5} \).

2. Identify the imaginary part:
- The imaginary part \( b \) is \( 0 \).

Thus, the real part is \( \sqrt{5} \) and the imaginary part is \( 0 \).

### Final Results:
- For \( 7 + 3i \): Real part = \( 7 \), Imaginary part = \( 3 \)
- For \( 0 + 7i \): Real part = \( 0 \), Imaginary part = \( 7 \)
- For \( \sqrt{5} + 0i \): Real part = \( \sqrt{5} \), Imaginary part = \( 0 \)