document.write( "Question 977415: Solve inequality. Please show steps too. I have no idea how to do this. \r
\n" );
document.write( "\n" );
document.write( " 2x^2 + 9x + 4 < 0 \n" );
document.write( "
Algebra.Com's Answer #598941 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "First of all factorise the equation:- \n" ); document.write( "2x^2 + 9x + 4 \n" ); document.write( "(2x + 1)(x + 4) \n" ); document.write( "So, x = -1/2 and x = -4 \n" ); document.write( "As this equation is positive (x^2) \n" ); document.write( "it opens upwards. \n" ); document.write( "It will cut the x axis at -4 and go \n" ); document.write( "down and then rise and cut the x axis at -1/2 \n" ); document.write( "before rising above the x axis. \n" ); document.write( "For 2x^2 + 9x + 4 <0 \n" ); document.write( "We are looking at the part of the curve below \n" ); document.write( "the x axis. \n" ); document.write( "This region is defined as:- \n" ); document.write( "-4 < x < -1/2 \n" ); document.write( "This is the answer. \n" ); document.write( " Hope this helps:-) \n" ); document.write( " |