document.write( "Question 1028569: A quadratic function h has the rule h(x) = x2 - 4x +5. Find the value of k for which h(x) +k =0 has two positive solutions.
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Algebra.Com's Answer #643664 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2-4x%2B5%2Bk=0\"$
\n" ); document.write( " $\"%28x%5E2-4x%2B4%29%2B5%2Bk=4\"$
\n" ); document.write( " $\"%28x-2%29%5E2=-1-k\"$
\n" ); document.write( " $\"%28x-2%29%5E2=-%281%2Bk%29\"$
\n" ); document.write( " $\"x-2=0+%2B-+sqrt%28-1-k%29\"$
\n" ); document.write( " $\"x=2+%2B-+sqrt%28-1-k%29\"$
\n" ); document.write( "So use the lower zero,
\n" ); document.write( " $\"2-sqrt%28-1-k%29%3E0\"$
\n" ); document.write( " $\"-sqrt%28-1-k%29%3E-2\"$
\n" ); document.write( " $\"sqrt%28-1-k%29%3C2\"$
\n" ); document.write( " $\"-1-k%3C4\"$
\n" ); document.write( " $\"-k%3C5\"$
\n" ); document.write( " $\"k%3E-5\"$
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