Simply the following polynomial, then identify what type it is.
6x^3 - 4 - 2x^3 + x + 2

For this case we have that by definition, the standard form of a polynomial is given by:

Where:

x: It is the variable

a, b, c, d, e, f: Are the coefficients of the polynomial

n, n-1,3,2,1: Are the exponents. n is the degree of the polynomial because it is the greatest exponent.

In this case we have the following polynomial:

We add similar terms taking into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

The degree of the polynomial is 3.

The degree of the polynomial is 3.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".