Answer:
option-A
Step-by-step explanation:
we are given
[tex]6b^2+3b[/tex]
we can factor each terms
and then we can take common terms among them
[tex]6b^2=2\times 3\times b\times b[/tex]
[tex]3b=1\times 3\times b[/tex]
we can replace it
and we get
[tex]6b^2+3b=2\times 3\times b\times b +1\times 3\times b[/tex]
now, we can take out common terms
we can see that common terms are 3 and b
[tex]6b^2+3b=3b(2\times b+1)[/tex]
we can simplify it
[tex]6b^2+3b=3b(2b+1)[/tex]
