# How do you find the derivative of y=(3x)( x + 2)?

Aug 4, 2015

I found: $y ' = 6 \left(x + 1\right)$

#### Explanation:

You can use the Product Rule where if you have a function:
$y = f \cdot g$
then
$y ' = f ' g + f g '$
and get:
$y ' = 3 \left(x + 2\right) + 3 x \cdot 1 = 3 x + 6 + 3 x = 6 \left(x + 1\right)$