SOLUTION: express 2x^2 +12x in form 2(x+a)^2 +b -find set values of x satisfying 2x^2 +12<14

Question 933071: express 2x^2 +12x in form 2(x+a)^2 +b
-find set values of x satisfying 2x^2 +12<14

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
express 2x^2 +12x in form 2(x+a)^2 +b
-find set values of x satisfying 2x^2 +12<14
***
2x^2 +12x
complete the square:
2(x^2+6x+9)-18
2(x+3)^2-18
..
2x^2+12<14
2x^2<2
x^2<1
(-1,1)
{x|-1 < x <1}
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