Question

Given f(x)=x^2 -9 find the indiccated values f(2)

Answer 1

Answer: f(2)=-5

Explanation:

To solve an equation like this means we need to understand input and output.

Typically, in an equation, x is the input and f(x)/y is the output. To find the output, you need to substitute the input into the equation.

f(x)=x²-9 is our given equation, and we need to find f(2), meaning 2 is x. So we can substitute to into the equation:

f(x)=(2)²-9 is our equation. In GEMDAS or order of operations, Exponents come before subtraction and 2² is 2·2=4. Now our equation is f(x)=4-9. 4-9=-5, meaning f(2) is -5.

Hope that helped a lot. Let me know any further questions.

:)

Answer 2

`\bullet\qquad\sf{f(2)=-5}`

Explanation:

In order to evaluate this function, we need to plug in 2 for x:

`\bullet\quad\sf{f(x)=x^2-9}` {plug in 2}

`\bullet\qquad\sf{f(2)=2^2-9}` {evaluate}

`\bullet\qquad\sf{f(2)=4-9}` {evaluate}

`\bullet\qquad\sf{f(2)=-5}` {answer}