Question

Please help

Answer 1

\[5^{4}-(-5^{4})\]

Answer 2

that is the same thing as
5^4 + 5^4= 2(5^4)

Answer 3

Well, when you subtract a negative, it's really the same as adding a positive. It doesn't matter if exponents are involved.
Someone explained this pretty well to me. They said, "view it like temperature"
So say it was 50 degrees outsite. Then you lost the opposite of 20 degrees. If you lost 20 degrees it would then be 30 degrees out, but you lost the opposite of 20 degrees so it really got 20 degrees warmer.
I can never explain that well.
Anyway, this shows us the rule

So this turns into
\[(5^4) + (+5^4)\]

Think you can finish this?