Question

Let f(x)=x2−3x−7 how do you find f(-3)?

Answer 1

given,

X= -3

(-3)² -3(-3) -7

9+9-7=11

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Answer 2

f(-3) = 11

Explanation:

To evaluate f(-3), substitute x = - 3 into f(x)

⇒

f

(

−

3

)

=

(

−

3

)

2

−

3

(

−

3

)

−

7

=

9

+

9

−

7

=

11