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Mathematics 17 Online
OpenStudy (anonymous):

Help Please

OpenStudy (anonymous):

@Mertsj

OpenStudy (mertsj):

f composite g means f(g(x)) and that means to replace each x in the function f with the function g

OpenStudy (anonymous):

yes i know that

OpenStudy (mertsj):

Then you have to do that for the functions in your problem to get the answer. Have you tried it yet?

OpenStudy (anonymous):

i ccame up wuth 6x^2+28

OpenStudy (mertsj):

Is this what you did? 3(2x-3)^2+1= 3(4x^2-12x+9)+1=

OpenStudy (anonymous):

no how did u get the second part?

OpenStudy (mertsj):

(2x-3)(2x-3)=4x^2-6x-6x+9=4x^2-12x+9

OpenStudy (anonymous):

okay than what?

OpenStudy (mertsj):

Use the distributive property and add the like terms.

OpenStudy (mertsj):

3(4x^2-12x+9)=12x^2-36x+27

OpenStudy (mertsj):

Now add the 1

OpenStudy (anonymous):

so would it be number 2? than

OpenStudy (mertsj):

yes

OpenStudy (anonymous):

well thank u i was way off :)

OpenStudy (mertsj):

yw

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