Question

solve the following using identities​

Answer 1

Answer:

• $(x + 2)^2 = x^2 + 4x + 4$
• $(x - 2)^2 = x^2 - 4x + 4$

Step-by-step explanation:

Identity :

• $(a+ b)^2 = a^2 + 2ab + b^2$
• $(a - b)^2 = a^2 - 2ab + b^2$

$(x + 2)^2 = x^2 + 2(x) (2) + 2^2\\= x^2 + 4x + 4$

$(x - 2)^2= x^2 - 2(x) (2) + 2^2\\= x^2 - 4x + 4$