document.write( "Question 1067108: If 5x + x squared > 100, then x is not? \r
\n" );
document.write( "\n" );
document.write( "If 5x - 17 = -x + 7, then x is? \n" );
document.write( "
Algebra.Com's Answer #682300 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! 5x+x^2>100 \n" ); document.write( "x^2+5x-100>0 \n" ); document.write( "x=(1/2)(-5+/- sqrt(25+400)); sqrt (425)=20.62 \n" ); document.write( "x=7.81 or -12.81 \n" ); document.write( "x is not between -12.81 and 7.81 inclusive. \n" ); document.write( "In the graph below, it is where the function is greater than 0. \n" ); document.write( " \n" ); document.write( "5x-17=-x+7 \n" ); document.write( "add xto both sides \n" ); document.write( "6x-17=7 \n" ); document.write( "add 17 to both sides \n" ); document.write( "6x=24 \n" ); document.write( "x=4 \n" ); document.write( "check \n" ); document.write( "20-17=-4+7=3 checks. \n" ); document.write( " \n" ); document.write( " |