Solve (x + 4)2 – 3(x + 4) – 3 = 0 using substitution. u = a. x b. x + 4 c. 3(x + 4) d. (x + 4)^2 show a little bit of work so i know your answer isn't bs

I would say that the answer is B

Option B is correct.

u= x+4

Step-by-step explanation:

Solve the equation:

Using substitution:

Let u = x+4

then;

        ....[1]

For a quadratic equation ....[2], then the solution is given by:

On comparing equation [1] and [2] we have;

a = 1 , b = -3 and c = -3

then;

⇒

⇒

Substitute u = x+4

then;

⇒

Subtract 4 from both sides we have;

⇒

and

⇒

Therefore, the solution for the given equation are,

,

4+4+2x

or

2x+8

step-by-step explanation: