SOLUTION: how do I show the breakdown of the following equation: -x to the second power+5x-9 for x = 3 I know the answer (back of book) to be -3, I just can not get there much less sho

Algebra ->  Equations -> SOLUTION: how do I show the breakdown of the following equation: -x to the second power+5x-9 for x = 3 I know the answer (back of book) to be -3, I just can not get there much less sho      Log On


   

Question 397123: how do I show the breakdown of the following equation:
-x to the second power+5x-9 for x = 3
I know the answer (back of book) to be -3, I just can not get there much less show how I got there.
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


You start with:



So if , then



Just do the arithmetic. Hint: Square 3, THEN apply the minus sign.

John

My calculator said it, I believe it, that settles it
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