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7 votes
If f(x)=x^2-3x-4 and g(x)=x^2+x, what is (f+g)(x)?

1 Answer

9 votes

Answer:

Explanation:

Set up the composite result function.

f

(

g

(

x

)

)

Evaluate

f

(

g

(

x

)

)

by substituting in the value of

g

into

f

.

f

(

x

+

2

)

=

3

(

x

+

2

)

4

Simplify each term.

Tap for more steps...

f

(

x

+

2

)

=

3

x

+

6

4

Subtract

4

from

6

.

f

(

x

+

2

)

=

3

x

+

2

User Viteinfinite
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