Answer:
[tex]2x^2(2x+3)[/tex]
Step-by-step explanation:
Find the greatest common factor of both, which would be [tex]2x^2[/tex].
Then, use the distributive property to rewrite it:
[tex]4x^2 + 6x^2 = 2x^2 * 2x + 2x^2 * 3 = 2x^2(2x + 3)[/tex]