document.write( "Question 1027817: Solving using the quadratic formula.\r
\n" ); document.write( "\n" ); document.write( "7x(x+2)+5=3x(x+1) \r
\n" ); document.write( "\n" ); document.write( "Do you first subtract the 3x^2 from 7x^2? I'm not 100% on how to work this through.
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Algebra.Com's Answer #643026 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
Hi there,
\n" ); document.write( "7x(x+2)+5=3x(x+1)
\n" ); document.write( "7x^2 + 14x + 5 = 3x^2 + 3x
\n" ); document.write( "7x^2 - 3x^2 + 14x - 3x + 5 + 0
\n" ); document.write( "4x^2 + 11x + 5 = 0
\n" ); document.write( "Solve using:-
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "a = 4, b = 11 and c = 5
\n" ); document.write( "\"x+=+%28-11+%2B-+sqrt%28+11%5E2-4%2A4%2A5+%29%29%2F%282%2A4%29+\"
\n" ); document.write( "\"x+=+%28-11+%2B-+sqrt%28+121+-+80+%29%29%2F%288%29+\"
\n" ); document.write( "\"x+=+%28-11+%2B-+sqrt%28+41+%29%29%2F%288%29+\"
\n" ); document.write( "\"x+=+%28-11+%2B+sqrt%28+41+%29%29%2F%288%29+\" : \"x+=+%28-11+-+sqrt%28+41+%29%29%2F%288%29+\"
\n" ); document.write( " x = -0.575 x = -2.175 (2 decimal places)
\n" ); document.write( "Hope this helps :-)
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