Find the greatest common factor.
42²x² + 42²x+ 40²
Enter the correct answer.

Answer:
4a^2
Step-by-step explanation:
[tex]4a^2x^2+4a^2x+4a^2= \\\\4a^2(x^2+x+1)[/tex]
Therefore, the largest common factor is 4a^2. Hope this helps!