# How do you factor #y= 7x^3+28x^2# ?

##### 1 Answer

Dec 25, 2015

#### Answer:

Both

#7x^3+28x^2 = 7x^2(x+4)#

#### Explanation:

#7x^3 = 7x^2*x#

#28x^2 = 7x^2*4#

So:

#7x^3+28x^2 = (7x^2*x)+(7x^2*4) = 7x^2*(x+4)#