SOLUTION: Find the values of each of the following polynomials for the given values of the variable. -x2-5x-6, x= -3 and x= -2 Thanks

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find the values of each of the following polynomials for the given values of the variable. -x2-5x-6, x= -3 and x= -2 Thanks      Log On


   

Question 75503: Find the values of each of the following polynomials for the given values of the variable.
-x2-5x-6, x= -3 and x= -2
Thanks
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If you're trying to find the values, simply substitute -3 and -2 for x:
-x%5E2-5x-6
-%28-3%29%5E2-5%28-3%29-6 Subsitute -3 into x
-9%2B15-6
15-15=0
So f(-3)=0
Do the same for x=-2

-x%5E2-5x-6
-%28-2%29%5E2-5%28-2%29-6 Subsitute -2 into x
-4%2B10-6
10-10=0
So f(-2)=0
It turns out that x=-2 and x=-3 are x-intercepts to the equation -x%5E2-5x-6
+graph%28+300%2C+200%2C+-6%2C+5%2C+-6%2C+5%2C-x%5E2-5x-6%29+Here's the graph of y=-x%5E2-5x-6