31 is the answer because you would do 5 x 3 an that's 15 and if it's squared u technically add 15 a second time
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Explanation:</h2>
We use an equation to say that two things are equal. An equation always has an equal sign "=". So an equation tells us that the left side is equal to the right side. In this case, we have the following equation:

So the only value that makes this equation to be true is 5, because:

For instance, let's choose another value, say, 8. So substituting:

Step-by-step explanation:
Please refer to the attachment
I’m assuming that 7 means x, and honestly all you have to do is multiply. x= 1 , y= 75.. so just multiply 75 and 272. The answer is 20,400.