document.write( "Question 29817: I am stummped!\r
\n" ); document.write( "\n" ); document.write( "let f(x)=9-x^2, g(x)=3-x. Find (f-g) (x). \n" ); document.write( "
Algebra.Com's Answer #16584 by sdmmadam@yahoo.com(530)\"\" \"About 
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let f(x)=9-x^2, g(x)=3-x. Find (f-g) (x).\r
\n" ); document.write( "\n" ); document.write( "f(x) = 9-x^2 ----(1)
\n" ); document.write( "g(x) = 3-x. ----(2)
\n" ); document.write( "(1) and (2) being polynomials in x are defined for all x
\n" ); document.write( "Now (f-g)(x)= f(x)-g(x)
\n" ); document.write( "= (9-x^2)- (3-x)
\n" ); document.write( "=9-x^2-3+x
\n" ); document.write( "=-x^2+x+6 (by additive commutativity and associativity)
\n" ); document.write( "which is again a polynomial in x defined for all x
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