document.write( "Question 86978: This question is really bothering me. Please help. Express f(x) = x2 + │x+3│ - 1 without the absolute values and hand-graph.\r
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document.write( " Hint: │x│= x if x ≥ 0 or\r
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document.write( " = –x if x < 0 \n" );
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Algebra.Com's Answer #62938 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Express f(x) = x^2 + │x+3│ - 1 without the absolute values and hand-graph. \n" ); document.write( "---------- \n" ); document.write( "Note: \n" ); document.write( "|x+3| = x+3 if x+3>=0; that is x>=-3 \n" ); document.write( "|x+3| = -(x+3) if x+3 <0; that is x<-3 \n" ); document.write( "-------------------- \n" ); document.write( "So, for x<-3 your equation becomes: \n" ); document.write( "f(x) = x^2 -x-3-1 \n" ); document.write( "f(x) = x^2-x-4 \n" ); document.write( "Graph this parabola to the left of x=-3. \n" ); document.write( "------------- \n" ); document.write( "And for x>=-3 you equation becomes: \n" ); document.write( "f(x) = x^2+x+3-1 \n" ); document.write( "f(x) = x^2+x+2 \n" ); document.write( "Graph this parabola at and to the right of x=-3 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------------------- \n" ); document.write( " \n" ); document.write( " |