Question

Consider the functions f(x) = 3x − 2 and g(x) = x2 − 1. What is the value of (f − g)(−2)?

Answer 1

(f − g)(−2) => f( -2 ) - g( -2 )

Answer 2

whats the answer though

Answer 3

well, plug in the values and substract them :)

Answer 4

can you explain it to me though???

Answer 5

\(\bf f(x) = 3x − 2\\
g(x) = x^2 − 1\\
f(-2)= 3(-2) − 2\\
g(-2)= (-2)^2 − 1\)

Answer 6

so next would be 4-1 and that's 3 so the answer is 3?

Answer 7

$$ \bf
f(-2)= \color{blue}{3(-2) − 2}\\
g(-2)= \color{green}{(-2)^2 − 1}\\
f(-2)-g(-2) = [\color{blue}{3(-2) − 2}] - [\color{green}{(-2)^2 − 1}]
$$

Answer 8

I am so lost....

Answer 9

@Zale101

Answer 10

I'm help less UGH

Answer 11

$$\bf f(-2)-g(-2) = [\color{blue}{3(-2) − 2}] - [\color{green}{(-2)^2 − 1}]\\
f(-2)-g(-2) = [-6-2]-[4-1]$$

Answer 12

so
-6-2 = -8
-[4-1] => -[-3] => 3
-8+3

:)

Answer 13

so -5?

Answer 14

yes

Answer 15

im sorry I suck at math

Answer 16

keep in mind that when grouping

- ( 2 + 3) => -1*2 + -1*3 => -2-3