How can you find the square of a sum?

Question

(x+1)^2

they have no value.

Answer 1

the general formula:

(x+1)^2= (x^2)+ 2x +1

Answer 2

(x+1)^2 is the same as (x+1) x (x+1)

so multiply all the parts together to get:

x^2 + 1x + 1x + 1 = x^2 + 2x + 1

Answer 3

(x+1)^2= (x + 1)(x + 1)

The you use FOIL to multiply the terms out:

F = First = x * x

O = Outside = x * 1

I = Inside = 1 * x

L = Last = 1 * 1

Add them up and you get:

x^2 + 2x + 1