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If [tex]f(x)=\frac{3-x^2}{3-x}[/tex], find [tex]f(-2)[/tex].

Sagot :

To find [tex]\( f(-2) \)[/tex] for the function [tex]\( f(x) = \frac{3 - x^2}{3 - x} \)[/tex], we follow these steps:

1. Substitute [tex]\( x = -2 \)[/tex] into the function:

[tex]\[ f(-2) = \frac{3 - (-2)^2}{3 - (-2)} \][/tex]

2. Calculate the numerator:

[tex]\[ 3 - (-2)^2 = 3 - 4 = -1 \][/tex]

3. Calculate the denominator:

[tex]\[ 3 - (-2) = 3 + 2 = 5 \][/tex]

4. Ensure the denominator is not zero:

Since the denominator [tex]\( 3 + 2 \neq 0 \)[/tex], we can proceed with the division.

5. Divide the numerator by the denominator:

[tex]\[ f(-2) = \frac{-1}{5} = -0.2 \][/tex]

So, the value of [tex]\( f(-2) \)[/tex] is:

[tex]\[ f(-2) = -0.2 \][/tex]

Therefore, [tex]\( f(-2) = -0.2 \)[/tex] and the intermediate calculations were:

- Numerator: [tex]\(-1\)[/tex]
- Denominator: [tex]\(5\)[/tex]
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