Respuesta :

MrsStrong

Answer:

18

Step-by-step explanation:

To find the second term of the coefficient, multiply out the left hand side of the equation.

[tex](3x+ 3)^2 = 9x^2 + bc + 9[/tex]

[tex](3x+3)(3x+3)\\9x^2 + 9x + 9x + 9\\9x^ 2+ 18x + 9[/tex]

The value of b is 18.