Hi, I have these four questions that I cannot seem to understand what they are asking me to solve. I do not know how to begin the question.

The questions are as followed:

3. Solve. Identify and reject any extraneous roots. Check your solutions using graphing technology.

a)

b)

c)

d)

How would I do these? My teacher only showed us the way to solve these when they are adding? (Worried)