Question

I can't decide which of these methods are correct when finding the product of (x + 2)^2:
(x + 2)^2, x^2 + 4^2, x^2 + 4.
Or:
(x + 2)^2, (x + 2) (x + 2), x^2 + 4x + 4.
Could someone help?

Answer 1

the second one (x+2)(x+2)

Answer 2

remember (a+b)^2= (a+b)*(a+b)....then use distributive law....which will give you a*a+a*b+b*a+b*b

Answer 3

Alright thank you! I forgot about the distributive law.