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## Answers

x+7=0 x+2=0

x= -7 x= -2

The answer is -7 and -2

ok here come;

factoring: (x+2) (x+7)=0;

x=-7 ; x=-2 ;

ilnitial plot;

------------o-----------o------I---

-7 -2 0 open interval;

interval (x+7)(x+2) >0

x<-7 (-) (-) = + > 0 satisfy (inequality);

-7<x<-2 (+) (-) = - > 0 does not satisfy;

x>-2 (+) (+) =+>0 satisfy;

hence : the solution set is {x/( x<-7, x>-2)} open interval;

here is your final graph;

/////////////////o-----------------o///////I/////////////;

x -7 -2 0 x;

or solution set {x<-7 U x>-2} U stands for union