Respuesta :

Answer: 12x^2 + 43x + 35 (if you go to k12)

Step-by-step explanation: took the quiz :) (also, sorry forgot to actually answer..)

After multiplication, we get [tex]12x^{2} +43x+35[/tex]

Multiplication :

We have to multiply,  

               [tex](3x+7)(4x+5)[/tex]

Now multiplying both term,

                  [tex]=(3x+7)(4x+5)\\\\=12x^{2} +15x+28x+35\\\\=12x^{2} +43x+35[/tex]

After multiplication, we get [tex]12x^{2} +43x+35[/tex]

Learn more about quadratic equation here:

https://brainly.com/question/1214333