document.write( "Question 903710: Solve by completing the square. X^2+x-1=0 \n" ); document.write( "
Algebra.Com's Answer #548238 by ewatrrr(24785)\"\" \"About 
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(x+1/2)^2 -1/4 - 1 = 0
\n" ); document.write( "(x+1/2)^2 = 5/4
\n" ); document.write( " x = -1/2 ± √5 / 2
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