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December 19, 2014

December 19, 2014

Posted by **Rebeca** on Sunday, November 11, 2007 at 7:37pm.

for x=-3 and for x=-2

-x^2-5x-6

how do i do the above i am not sure but have an idea can someone help?

- math - algebra -
**Michael**, Sunday, November 11, 2007 at 7:41pmAll you have to do is plug x into the polynomial. For x=-3, you would have -(-3)^2-5(-3)-6. Simply that to get your solution (which should be just a number). Then, plug in -2 for the second part, simplify, and you're done.

- math - algebra -
**Rebeca**, Sunday, November 11, 2007 at 7:49pmhow is this?

-(-3^2)-5(-3)-6=

-9+15-6=18 (18 is the answer?)

- math - algebra -
**Reiny**, Sunday, November 11, 2007 at 10:44pm<< -9+15-6=18 >> ??

how did you get 18 for that?

-9+15-6

15-9-6

= 15-15

= 0

- math - algebra -
- math - algebra -
**Rebeca**, Sunday, November 11, 2007 at 8:47pmi have checked it about 5 times and posted my work, but the teacher stated that the answer is 0 i do not know how she got the answer it is driving me crazy. thank you for confirming my answer.

- math - algebra -

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