Question

What's a squared plus a squared

Answer 1

Get 1² as squared because they're the same thing.
1² + 1² = 2², the answer is 2²

Answer 2

for example lets use 3^2 + 4^2, you add the main numbers, 3 and 4 to get 7, then there are still the exponents, the squared signs, they don't change, they stay as a two. If your problem required a single whole number, then you have to square the 7, 7*7 is 49, so that or 7^2 would be your final answer.