document.write( "Question 60437: Given f(x)=5x+7 and g(x)=x^2+7, find (g f)(x). \n" ); document.write( "
Algebra.Com's Answer #41525 by tutorcecilia(2152)\"\" \"About 
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f(x)=5x+7 and g(x)=x^2+7
\n" ); document.write( "(g f)(x)=(5x+7)^2+7 [Dumb f into g and solve]\r
\n" ); document.write( "\n" ); document.write( "(g of f) (x)=(5x+7)(5x+7)+7
\n" ); document.write( "=25x^2+70x+49+7
\n" ); document.write( "=25x^2+70x+56
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