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Function Operations Given the functions: f(x) = 8x + 9 and g(x) = 2x - 6, determine each of the following. Give your answers as simplified expressions written in descending order. Evaluate (f + g)(x) (f + g)(x) = Evaluate (f - g)(x) (f - g)(x) = Evaluate (f \cdot g)(x) (f \cdot g)(x) = Evaluate \left(\frac{f}{g}\right)(x) \left(\frac{f}{g}\right)(x) = Question Help: Message instructor Calculator Submit Question

          Function Operations
Given the functions: f(x) = 8x + 9 and g(x) = 2x - 6, determine each of the following.
Give your answers as simplified expressions written in descending order.
Evaluate (f + g)(x)
(f + g)(x) = 
Evaluate (f - g)(x)
(f - g)(x) = 
Evaluate (f \cdot g)(x)
(f \cdot g)(x) = 
Evaluate \left(\frac{f}{g}\right)(x)
\left(\frac{f}{g}\right)(x) = 
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Function Operations
Given the functions: f(x) = 8x + 9 and g(x) = 2x - 6, determine each of the following.
Give your answers as simplified expressions written in descending order.
Evaluate (f + g)(x)
(f + g)(x) =
Evaluate (f - g)(x)
(f - g)(x) =
Evaluate (f ·g)(x)
(f ·g)(x) =
Evaluate ((f)/(g))(x)
((f)/(g))(x) =
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Added by Lori B.

Elementary and Intermediate Algebra

Alan S. Tussy, R. David Gustafson 5th Edition

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Function Operations Given the functions: f(x)=8x+9 and g(x)=2x-6, determine each of the following. Give your answers as simplified expressions written in descending order. able[[Evaluate (f+g)(x),(f+g)(x)= Function Operations Given the functions: f(=8+ 9 and g(=2x-6, determine each of the following Give your answers as simplified expressions written in descending order. f+g)x= Evaluate(f+ g)() f-gx)= Evaluate(f-g)x) (fg)x= Evaluate(f g)() (x) Evaluate Question Help:M Message instructor Calculator Submit Question MacBook Pro

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Transcript

00:01 This question wants me to evaluate this function with three different x values.

00:08 So let's look at the first x value.

00:10 So it wants me to plug in negative 4x.

00:13 So what you're basically going to do is everywhere i see an x here, i'm going to substitute negative 4x into it.

00:20 So it would be, i'm going to put in parentheses.

00:23 So i see an x here.

00:24 It's squared.

00:25 So it's going to be negative 4x squared plus 4.

00:30 Now i see another x, so i'm going to substitute that in.

00:33 Negative 4x minus 5.

00:35 And now i need to simplify this.

00:38 Negative 4 squared is 16.

00:41 X squared is x squared.

00:43 So the squared has to go to the negative 4 and the x.

00:48 Then i'm going to simplify the next.

00:50 4 times negative 4 is negative 16, x, and then minus 5.

00:55 So that would be the first one.

00:58 The second one wants us to do g x minus 5.

01:07 Again, same concept.

01:10 Now instead of x, i'm going to plug in x minus 5.

01:15 So x minus 5 because there's an x there and is squared plus 4 and another x.

01:20 So i'm going to put in x minus 5.

01:24 Now i'm going to have to foil this.

01:27 Okay, so if you remember how to foil, put it here...

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