Question

Pick the expression that matches this description:

A monomial of the 2nd degree with a leading coefficient of
Choose 1 answer:

(Choice A)
A
3n^2
B
3n-n^2
C
3n^2-1
D
2n^3

Answer 1

3n^2

Explanation:

Khan

Answer 2

Answer:
`A.\ 3n^2`

Explanation:

Monomial is just a kind of polynomial with just one term.

A monomial of 1st degree means the variable should have power of 1. For example :
`3x, 4y , 5t...` etc.

Similarly, A monomial of 2nd degree means the variable should have power of 2. For example :
`3x^2, 4y^2 , 5t^2...` etc.

So, from all the options , the correct option is
`A.\ 3n^2`, where the variable has power of 2, i.e. its a monomial of the 2nd degree with a leading coefficient of 3.

Note:

`B.\3n-n^2 \text{ : It is not monomial, as it has 2 terms.}\\C.\3n^2-1 \text{ : It is not monomial, as it has 2 terms.}\\D.\2n^3 \text{ : It is a monomial,but of 3rd degree.}\\`