document.write( "Question 385511: le f(x)= x^2-4x and g(x)=4/x-4, find (g0f)(-4) \n" ); document.write( "
Algebra.Com's Answer #272744 by stanbon(75887)\"\" \"About 
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f(x)= x^2-4x and g(x)=4/(x-4),
\n" ); document.write( "find (gof)(-4)
\n" ); document.write( "= g[f(-4)
\n" ); document.write( "= g[16+16]
\n" ); document.write( "= g[32]
\n" ); document.write( "= 4/[32-4]
\n" ); document.write( "= 4/28
\n" ); document.write( "= 1/7
\n" ); document.write( "============
\n" ); document.write( "cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );