document.write( "Question 1065686: Find the rules for the composite functions f ○ g and g ○ f.\r
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document.write( "f(x) = 4x^2 + 7x + 7; g(x) = x + 9\r
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document.write( "f ○ g= ??\r
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document.write( "g ○ f= ?? \n" );
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Algebra.Com's Answer #680892 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! For f o g, put the g in for every x in f \n" ); document.write( "That would be 4 (x+9)^2+7 (x+9)+7= 4x^2+25x+151 \n" ); document.write( "----------------- \n" ); document.write( "For g o f, put the f in for every x in g \n" ); document.write( "4x^2+7x+7+9=4x^2+7x+16. \n" ); document.write( " |