## anonymous one year ago Help please this is my last year and i really need to do good! I will fan and medal!!! Given f(x)=2x^2+8 and g(x)=5x-6, find each function for questions 4-5. 4. (f+g)(x) 5. (fxg)(x)

1. breyliance

i would suggest contacting your teacher

2. anonymous

I cant he is out of the office today

3. breyliance

4. anonymous

$(f+g)(x)=f(x) + g(x)$ Add the functions and combine like terms $f(x) + g(x)=2x^2+8+5x-6$

5. breyliance

holy crap

6. anonymous

:( none of my family knows this stuff and either do i, i have trouble understanding the problems

7. anonymous

5. $$(f \times g)(x)=f(x) \times g(x)=(2x^2+8)(5x-6)$$ Use FOIL/Distribution to simplify

8. skullpatrol

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9. skullpatrol

To add polynomials you add their similar terms, similar terms monomials that are exactly alike or are the same except for their numerical coefficient.

10. skullpatrol

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11. anonymous

So nothing else gets done with the 2x^2 or the 5x?

12. skullpatrol

Correct, they are not similar terms.

13. anonymous

But if there wasnt the ^2 then they could have been added together to make 7x right?

14. skullpatrol

yes

15. anonymous

okay how would i work the next one out?

16. skullpatrol

Use the distributive property. Do you recall that?

17. skullpatrol

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18. skullpatrol

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19. skullpatrol

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20. anonymous

Thank you so much, Would you be able to help me with a few more in a sec?

21. skullpatrol

I can try :-)

22. anonymous

Okay ill post a new question though

23. skullpatrol

sure