document.write( "Question 48938: 2x^2+7x-2=0 skolve for x using quadratic formula if there is more than one solution separate with commas \n" ); document.write( "
Algebra.Com's Answer #32419 by tutorcecilia(2152)\"\" \"About 
You can put this solution on YOUR website!
2x^2+7x-2=0
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\" [The quadratic formula]
\n" ); document.write( ".
\n" ); document.write( "Values:
\n" ); document.write( "a=2
\n" ); document.write( "b=7
\n" ); document.write( "c=-2
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-7+%2B-+sqrt%28+7%5E2-4%2A2%2A%28-2%29+%29%29%2F%282%2A2%29+\" [Plug-in the values]
\n" ); document.write( ".
\n" ); document.write( "\"x+=+%28-7+%2B-+sqrt%28+49-%28-16%29+%29%29%2F%284%29+\" [Simplify]\r
\n" ); document.write( "\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( "\"x+=+%28-7+%2B-+sqrt%28+%2865%29+%29%29%2F%284%29+\"\r
\n" ); document.write( "\n" ); document.write( ".
\n" ); document.write( "Two answers:
\n" ); document.write( "\"x+=+%28-7+%2B+%28+8.0623+%29%29%2F%284%29+\"
\n" ); document.write( "x = 0.2656
\n" ); document.write( ".
\n" ); document.write( "or
\n" ); document.write( ".
\n" ); document.write( "\"x+=+%28-7+-+%28+8.0623+%29%29%2F%284%29+\"
\n" ); document.write( "x=-3.766\r
\n" ); document.write( "\n" ); document.write( ".
\n" ); document.write( "Check each value of x by plugging (x=0.2656) or (x=-3.766) back into the original equation.
\n" ); document.write( "
\n" ); document.write( "
\n" );