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]
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