Identify the terms, their coefficients for each of the following expressions: `7x^2y z-5x y` (ii) `x^2+x+1`

Explanation

To identify the terms and their coefficients for the given expressions, we will break down each expression step by step.

### Step 1: Analyze the first expression `7x^2yz - 5xy`

1. **Identify the terms**:
- The expression `7x^2yz - 5xy` consists of two terms:
- **First term**: `7x^2yz`
- **Second term**: `-5xy`
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