document.write( "Question 1038671: What values of \"a\" does the function f(x)=ax^2+6x+9 have two zeros, have one zero, have no zero's\r
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Algebra.Com's Answer #653391 by josgarithmetic(39617) $\"\"$ $\"About$

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$\"6%5E2-4%2Aa%2A9\"$
\n" ); document.write( " $\"36-36a\"$ ------discriminant.\r
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\n" ); document.write( "\n" ); document.write( "Notice that if a=1, f is a perfect square and $\"f%28x%29=%28x%2B3%29%5E2\"$ and has exactly ONE zero.\r
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\n" ); document.write( "\n" ); document.write( " $\"a%3C1\"$ ------------ two real zeros\r
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\n" ); document.write( "\n" ); document.write( " $\"a%3E1\"$ ------------ No real zeros \n" ); document.write( "

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