document.write( "Question 967150: Given f(x)=nx^2-12x+9n where n is a real number. What is the value(s) of n such that this quadratic has ONLY ONE REAL root. \n" ); document.write( "
Algebra.Com's Answer #591102 by josgarithmetic(39625)\"\" \"About 
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Discriminant must be 0.\r
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\n" ); document.write( "\n" ); document.write( "\"%28-12%29%5E2-4%2An%2A9n=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"144-36n%5E2=0\"\r
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\n" ); document.write( "\n" ); document.write( "\"4-n%5E2=0\"\r
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\n" ); document.write( "\n" ); document.write( "n=-2 or n=2
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