SOLUTION: Evaluate the expression for the value of the variable(s) -2x^3-x^2+5x+2; x=-3 Here is what I have gotten so far. -2(-3)^3-(-3)^2+5(-3)+2 I got stuck after this.. I don't kn

Algebra ->  Probability-and-statistics -> SOLUTION: Evaluate the expression for the value of the variable(s) -2x^3-x^2+5x+2; x=-3 Here is what I have gotten so far. -2(-3)^3-(-3)^2+5(-3)+2 I got stuck after this.. I don't kn      Log On


   

Question 342438: Evaluate the expression for the value of the variable(s)
-2x^3-x^2+5x+2; x=-3
Here is what I have gotten so far.
-2(-3)^3-(-3)^2+5(-3)+2
I got stuck after this.. I don't know what to do next.... Please Help.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-2x%5E3-x%5E2%2B5x%2B2 Start with the given expression.


-2%28-3%29%5E3-%28-3%29%5E2%2B5%28-3%29%2B2 Plug in x=-3.


-2%28-27%29-%28-3%29%5E2%2B5%28-3%29%2B2 Cube -3 to get -27.


-2%28-27%29-9%2B5%28-3%29%2B2 Square -3 to get 9.


54-9%2B5%28-3%29%2B2 Multiply -2 and -27 to get 54.


54-9-15%2B2 Multiply 5 and -3 to get -15.


32 Combine like terms.


So -2x%5E3-x%5E2%2B5x%2B2=32 when x=-3


If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim