document.write( "Question 263531: solve f(x)=x^2-2x-4 and then graph your answer? \n" ); document.write( "

Algebra.Com's Answer #194226 by checkley77(12844) $\"\"$ $\"About$

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f(x)=x^2-2x-4
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "x=(2+-sqrt[-2^2-4*1*-4])/2*1
\n" ); document.write( "x=(2+-sqrt[4+16])/2
\n" ); document.write( "x=(2+-sqrt20)/2
\n" ); document.write( "x=(2+-4.472)/2
\n" ); document.write( "x=(2+4.72)/2
\n" ); document.write( "x=6.72/2
\n" ); document.write( "x=3.36 ans.
\n" ); document.write( "x=(2-4.72)/2
\n" ); document.write( "x=-2.72/2
\n" ); document.write( "x=-1.36 ans.
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+x%5E2+-2x+-4%29+\"$ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, x^2 -2x -4). \n" ); document.write( "

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