Question 507568
-x^2 - 3x^3 - x^4 


-(3)^2 - 3(3)^3 - (3)^4  ... plug in x = 3


-9 - 3(27) - 81


-9 - 81 - 81


-90 - 81


-171



So -x^2 - 3x^3 - x^4  = -171 when x = 3

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-x^2 - 3x^3 - x^4 


-(-3)^2 - 3(-3)^3 - (-3)^4  ... plug in x = -3


-9 - 3(-27) - 81


-9 + 81 - 81


72 - 81


-9



So -x^2 - 3x^3 - x^4  = -9 when x = -3


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Thanks,


Jim