Find the degree of each of the following polynomials :
`(i) 5x^(2)-2x+1 " " (ii) 1-5t+t^(4) " " (iii) 7 " " (iv) x^(4)-3x^(6)+2`

Explanation

To find the degree of each polynomial, we need to identify the highest power of the variable in each expression. Let's go through each part step by step.

### Solution:

**(i) For the polynomial \(5x^2 - 2x + 1\):**
1. Identify the terms: \(5x^2\), \(-2x\), and \(1\).
2. The powers of \(x\) in these terms are:
- \(5x^2\) has a power of \(2\).
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