Step-by-step explanation:
[tex]12y^{2} + 4y \\4y( \frac{12y^{2} }{4y} + \frac{4y}{4y} ) \\ 4y(3y + 1)[/tex]
12y²+4y
divide both sides by 4
therefore,
3y²+y
y(3y+1)
