The answer is 60 surprisingly
Answer: Could you give us the graph?
Step-by-step explanation:
For this case we must indicate which of the equations shown can be solved using the quadratic formula.
By definition, the quadratic formula is applied to equations of the second degree, of the form:

Option A:

Rewriting we have:

This equation can be solved using the quadratic formula
Option B:

Rewriting we have:

It can not be solved with the quadratic formula.
Option C:

Rewriting we have:

This equation can be solved using the quadratic formula
Option D:

Rewriting we have:

It can not be solved with the quadratic formula.
Answer:
A and C
Since each side of a sqare is equal and there are four sides to the square

X being the side length.
Then you would simiply divide by 4 to isolate x

A side length is 56