The degree of the polynomial $5 x^{3} + 4 x^{2} + 7 x$ is:

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1

2

4

3

answer is D.

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Detailed Solution

The given polynomial is

5 x^{3} + 4 x^{2} + 7 x

.
We need to find the degree of the polynomial.
The degree of a polynomial is the highest value of the power of the variable existing in any of the terms of the given expression.
Here, the highest power of x is 3.
Thus, the degree of the given polynomial is 3.
Hence, option 4 is correct.

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