I don't understand at all

Step-by-step explanation:

Hey, there!!

Let me explain you very simply, ok.

Here, according to the question,

X is square so, which finding the value of x you must take it to the right side (in root form ). so,

Now, as we know that,

sq.root of 25 = 5

sq.root of 144 = 12

Now, you write it as,

Now, square root and (5/12) square ( square root , square gets cancelled).

You will get as,

And its your simplified answer.

Hope it helps...

they used 313 gallons of paint