Question

X2+4x+? = (x+?)2
Complete the square to form a true equation

Answer 1

Answer 4 and 2

Step by step exploration

x^2+4x+4 = (x+2)^2
(From formula (a+b)^2=a^2+2ab+b^2)

Answer 2

Explanation:

x^2 - 4 * x + 4 = (x - 2)^2.