Combine like terms and classify the polynomial by the number of terms.

7x + 3x – x

Is monomial correct?

yes, after combining terms.

To combine like terms, you need to add or subtract coefficients (numbers in front of the variables) that have the same variable attached to them. In this case, we have:

7x + 3x - x

To combine the x terms, we add the coefficients. So we get:

(7 + 3 - 1)x

This simplifies to:

9x

Now, let's classify the polynomial by the number of terms. A monomial is a polynomial with only one term. In this case, we have one term: 9x. So, yes, it is correct to classify this polynomial as a monomial.

To combine like terms in the polynomial 7x + 3x - x, we can simply add the coefficients of the terms with the same variables.

The terms with 'x' are 7x, 3x, and -x.

Adding the coefficients, we get 7 + 3 - 1 = 9.

So, the expression simplifies to 9x.

Now, let's classify the polynomial by the number of terms.

Since there is only one term, 9x, the polynomial is called a monomial.

Therefore, the statement "monomial" is correct.