Question

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

Answer 1

Answer:

f(-3) = 9

Step-by-step 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 ..

Answer 2

Answer:  $f(-3)=9$

Step-by-step 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:

$f(-3)=9$