riannadawn67 riannadawn67
  • 21-06-2017
  • Mathematics
contestada

solve for x. enter your answer in interval notation using grouping symbols x^2+11x<-18

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matthewcooke23 matthewcooke23
  • 21-06-2017
move the -18 across so that x^2+11x+18<0
then solve as if equal to 0
(x+9)(x+2)<0
x=-9 and x=-2 put these on a graph and it is less than 0 when within the graph hence  x>-9 and x<-2
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