Let `f(x)=x^2`and `g(x) = 2x + 1`be two real functions. find `(f +g)(x)`, `(f-g)(x)`, `(fg)(x)`, `(f/g)(x)`.

Explanation

To solve the problem step by step, we will find the following expressions: \( (f + g)(x) \), \( (f - g)(x) \), \( (fg)(x) \), and \( \left(\frac{f}{g}\right)(x) \).

Given:
- \( f(x) = x^2 \)
- \( g(x) = 2x + 1 \)

### Step 1: Find \( (f + g)(x) \)

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