document.write( "Question 470543: please help me solve this! solve x^2 +7x-4=0 \n" ); document.write( "
Algebra.Com's Answer #322741 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
x^2 +7x-4=0\r
\n" ); document.write( "\n" ); document.write( "Find the roots of the equation by quadratic formula
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\n" ); document.write( "a= 1 b= 7 c= -4
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\n" ); document.write( "b^2-4ac= 49 - 16
\n" ); document.write( "b^2-4ac= 65
\n" ); document.write( "\"sqrt%28%0965%09%29\"= 8.06
\n" ); document.write( "\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"
\n" ); document.write( "\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"
\n" ); document.write( "x1=( -7 + 8.06 )/ 2
\n" ); document.write( "x1= 0.53 5/9
\n" ); document.write( "x2=( -7 -8.06 ) / 2
\n" ); document.write( "x2= -7.53 -68/9
\n" ); document.write( "Ignore negative value
\n" ); document.write( "x = 0.53 mph LCD = speed
\n" ); document.write( "m.ananth@hotmail.ca
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