Respuesta :

Answer:

the expression 6x should be 6x^2

Step-by-step explanation:

[tex](3x+2) (x^2+2x+4)[/tex]

First multiply 3x inside the second parenthesis

[tex](3x) (x^2+2x+4)=3x^3+6x^2+12x[/tex]

                    x^2          2x           4

3x                3x^3         6x^2        12x                  

2                  2x^2         4x            8

the expression 6x should be 6x^2

because 2x times 3x is 6x^2

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