MCQ
Which of the following is a quadratic polynomial?
- A$x + 4$
- B$x^3 + x$
- C$x^3 + 2x + 6$
- ✓$x^2 + 5x + 4$
✓
Answer
Correct option: D.
$x^2 + 5x + 4$
A polynomial of degree $2$ is called a quadratic polynomial.
Options $(a), (b)$ and $(c)$ have degrees $1, 3$ and $3$ respectively,
so they are not quadratic polynomials.
The degree of $x^2 + 5x + 4$ is $2,$ so it is a quadratic polynomial.
Options $(a), (b)$ and $(c)$ have degrees $1, 3$ and $3$ respectively,
so they are not quadratic polynomials.
The degree of $x^2 + 5x + 4$ is $2,$ so it is a quadratic polynomial.
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