Question

Find f(-3) if f(x) = x 2.

Answer 1

Answer:
`f(-3)=9`

Explanation:

Given the quadratic function
`f(x)=x^2`, you can find
`f(-3)` by substituting the input value
`x=-3` into this function, with this procedure you will get the corresponding output value.

Therefore, when
`x=-3`, you get that the output value is the following:

`f(x)=x^2\\\f(-3)=(-3)^2`

NOTE: Since the exponent is an even number, the result will be positive, because:

`(-3)(-3)=3`

Therefore, knowing this, you get that
`f(-3)` of the function
`f(x)=x^(2)` is:

`f(-3)=9`

Answer 2

f(-3) = 9

Explanation:

Lets define f(a) first where a is any integer,

f(a) is found out by putting the integer in the function in place of the variable

So for the given question

`f(x) = x^(2)`

In order to find f(-3) we will put -3 in place of x

So putting -3,

`f(-3) = (-3)^(2)`

`f(-3) = 9`

So, the value of function at -3 is 9 ..