document.write( "Question 812968: how do you solve the equation by completing the square. z2+5z-6=0 (z is squared) \n" ); document.write( "
Algebra.Com's Answer #489430 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi,
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document.write( "how do you solve the equation by completing the square. 
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document.write( "z^2+5z-6=0  
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document.write( "First add and subtract \"%285%2F2%29%5E2\"
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document.write( "z^2+5z + 25/4 -25/4 -6 = 0 
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document.write( "\"%28z+%2B+5%2F2%29%5E2+-+49%2F4+=+0\"
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document.write( "\"%28z+%2B+5%2F2%29%5E2+=+49%2F4+\"
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document.write( "    z + 5/2 = ± 7/2
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document.write( "    z =  -5/2 ± 7/2
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document.write( " z = -6, 1 \n" );
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