document.write( "Question 778730: Solve,\r
\n" ); document.write( "\n" ); document.write( "4x^2+25=20 x
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Algebra.Com's Answer #474880 by waynest(281)\"\" \"About 
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complete the square:
\n" ); document.write( "4x^2/4 - 20x/4 +25/4 = 0
\n" ); document.write( "x^2 - 5x + 6.25 =0
\n" ); document.write( "x^2 -5/2x + 6.25 = 0
\n" ); document.write( "square the results of -5/2
\n" ); document.write( "x^2 -5x + 6.25 - 6.25 + 6.25 = 0
\n" ); document.write( "x^2 -5x + 6.25 = 6.25 - 6.25
\n" ); document.write( "x^2 -5x + 6.25 = 0
\n" ); document.write( "(x - 2.5)^2 = 0
\n" ); document.write( "x - 2.5 = 0
\n" ); document.write( "x = 2.5
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