SOLUTION: Find the value of the polynomial {{{-x^2+10x-10}}} when x=-5 i want to make sure i did this correctly. {{{-(-5^2)+10(-5)-10}}} {{{25-50-10}}} answer -35

Question 94068: Find the value of the polynomial when x=-5
i want to make sure i did this correctly.

answer -35
Found 2 solutions by stanbon, edjones:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Correct
Cheers,
Stan H.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
This illustrates a very important and often-times overlooked rule in squaring numbers.
-5*-5=25 but Check it out on a calculator. Make sure you don't use any brackets. It turns out and are negative also.
What's going on here?
Think of -5 as -1*5 and only the the 5 gets squared.
Use brackets if you want the result to be positive. eg.
Back to your problem:

Ed Jones
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