document.write( "Question 701650: I need help with solving this problem:\r
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document.write( "Directions: Let f(x)=x^2 and g(x)=3x+7. Find the following composites.\r
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document.write( "#1. f(g(-2))\r
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document.write( "#2. f(g(x))\r
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document.write( "I have tried solving them over and over, but I keep getting the wrong answer. For #1 I get -2x^2. For #2 I get 3x^3+7x^2. I know those answers are not right and I need help, please! \n" );
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Algebra.Com's Answer #432502 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Let f(x)=x^2 and g(x)=3x+7. Find the following composites.\r \n" ); document.write( "\n" ); document.write( "#1. f(g(-2)) \n" ); document.write( "g(-2) = 3*-2+7 = 1 \n" ); document.write( "f(1) = 1 \n" ); document.write( "--------------- \n" ); document.write( "#2. f(g(x)) \n" ); document.write( "= f(3x+7) \n" ); document.write( "= 9x^2 + 42x + 49 \n" ); document.write( " \n" ); document.write( " |