Question

for suenoromis:

Answer 1

alright, I will take over imranmeah91

Answer 2

let's complete the square of the following

x^2+4x+2

Answer 3

To complete the square , we take the middle term (which is 4x) , half the coefficient (we get 2) and square it (we get 4)

x^2+4x+4 +2

now we can write it as factor

(x^2+4x+4) +2

(x+2)^2 +2

now remember since you added extra 4 to the equation, to get back to original value , subtract it back

(x+2)^2+2-4

(x+2)^2-2