document.write( "Question 330166: (x+6)(x-15)(x+2)is greater than 0 what is the solution set? \n" ); document.write( "
Algebra.Com's Answer #236604 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! (x+6)(x-15)(x+2)is greater than 0 \n" ); document.write( "--- \n" ); document.write( "Find the boundary values: x= -6,15,-2 \n" ); document.write( "----- \n" ); document.write( "Plot those values on a number line. \n" ); document.write( "at -6,-2,15 \n" ); document.write( "--- \n" ); document.write( "Check a test value in each of the resulting \n" ); document.write( "line intervals in the inequality to see where \n" ); document.write( "the solutions are: \n" ); document.write( "--- \n" ); document.write( "(x+6)(x-15)(x+2)> 0 \n" ); document.write( "Check x = -20: -*-*- >0 ; false so no solutions in (-inf,-15) \n" ); document.write( "---- \n" ); document.write( "Check x = -4: +*-*- >0 ; true so solutions in (-6,-2) \n" ); document.write( "----- \n" ); document.write( "Check x = 0; +*-*+ >0 false so no solutions in (-2,15) \n" ); document.write( "------ \n" ); document.write( "Check x = 20: +*+*+ >0 ; true so solutions in (15,+inf) \n" ); document.write( "========================= \n" ); document.write( "Solution: (-6,-2)U(15,+inf) \n" ); document.write( "============================== \n" ); document.write( "Stan H. \n" ); document.write( "==== \n" ); document.write( " |