Is 10 a perfect square? explain why or why not.

we know that

We say that a number is a perfect square if the square root of that number results in an whole number.

so

is not a whole number

therefore

the answer is

The number is not a perfect square

I'm pretty sure you meant:



To evaluate a function at a certain value, you just have to plug that certain value into the function. Basically, replace all x's with the one given. Let's do f(x) first:


So, for f(x), your answer is -50.

Let's do the exact same thing for g(x):


Your answer for g(x) is -12. 

Hopefully, this makes sense!