Answer:

Step-by-step explanation:

Step 1: Factor out the common term 

Step 2: Add the whole numbers

Step 3: Combine the fractions:

Step 4: Convert the improper fractions to mixed numbers

Step 5: Add the numbers

Therefore, the answer to the equation is
in fraction, and decimal; 
Its line 1
if we expand the second and third expressions they come back to the first.
The last one is called the vertex form of a parabola
Have a nice day hope this helps