document.write( "Question 36105: I need help with this! Thanks so much!
\n" ); document.write( "apply the quadratic formula to find the roots of the given function, and then graph the function.\r
\n" ); document.write( "\n" ); document.write( "f(x) = x^2 - 4
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Algebra.Com's Answer #22133 by rapaljer(4671)\"\" \"About 
You can put this solution on YOUR website!
Again, why would you want to use the quadratic formula?? This one ALSO factors:\r
\n" ); document.write( "\n" ); document.write( "\"f%28x%29+=+x%5E2+-+4\"
\n" ); document.write( "\"f%28x%29+=+%28x-2%29%2A%28x%2B2%29=0\"
\n" ); document.write( "->-> \"x=+2\" or \"x=+-2\"\r
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\n" ); document.write( "\n" ); document.write( "Graphing looks like this:\r
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\n" ); document.write( "\n" ); document.write( "\"graph+%28300%2C+300%2C+-4%2C+4%2C+-6%2C6%2C+x%5E2+-4%29\"\r
\n" ); document.write( "\n" ); document.write( "The roots are at x = -2 and x = 2\r
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\n" ); document.write( "\n" ); document.write( "R^2 at SCC
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