SOLUTION: <img src="http://img110.imageshack.us/img110/6295/mathis8.png"> pleaseeee i neeeeeed help!

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Question 115189:


pleaseeee i neeeeeed help!
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Since is a factor, this means is a zero. In other words,

Now let's solve for a
Start with the given equation


Raise -1 to the seventh power


Multiply


Combine like terms


Add "a" to both sides


So the value of "a" is

This means that the function is





Now just plug in to find f(2)



Plug in . In other words, replace each x with 2.


Evaluate to get 128.


Multiply -3 and 2 to get -6


Now combine like terms


So our answer is
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