Answers

2016-08-02T22:27:02+08:00
1.) -x^2-x +12>0;
(-x +3) (x+4)=0;
-x=-3;
x=3  ;  x=-4;
{-4,3} no need to graph
0
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2016-08-03T00:57:14+08:00
1)  d

2)  j

3)  e

4)  c

5)  a

6)  g

7)  h

8)  i

9)  l  (no solution because the nature of roots is complex, imaginary nos.)

10)  l.  (no solution because the nature of roots is complex, imaginar nos.)
1 5 1