SOLUTION: Please help solve... Solve/ Solution set (x+5)(x-11)(x+4)>0 Add (6x^2-9xy+y^2)+(-9x^2-7xy-y^2)+(x^2+xy+7y^2) Thanks!

Question 238553: Please help solve...
Solve/ Solution set
(x+5)(x-11)(x+4)>0
Add
(6x^2-9xy+y^2)+(-9x^2-7xy-y^2)+(x^2+xy+7y^2)
Thanks!
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
Solution set: (-5,-4) U (11, infinity)

(6x^2-9xy+y^2)+(-9x^2-7xy-y^2)+(x^2+xy+7y^2)

(6x^2-9x^2+x^2)+(-9xy-7xy+xy)+(y^2-y^2+7y^2)

-2x^2-15xy+7y^2
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