document.write( "Question 174291: Use the following to answer the question
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document.write( "f(x)=-4x^2+5x+3 and g(x)=2x^2-3x-4\r
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document.write( "Find (f+g)(2) \n" );
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Algebra.Com's Answer #129223 by nycsub_teacher(90) ![]() You can put this solution on YOUR website! Use the following to answer the question \n" ); document.write( "f(x)=-4x^2+5x+3 and g(x)=2x^2-3x-4\r \n" ); document.write( "\n" ); document.write( "Find (f+g)(2)\r \n" ); document.write( "\n" ); document.write( "We first find g(2).\r \n" ); document.write( "\n" ); document.write( "Let x = 2\r \n" ); document.write( "\n" ); document.write( "g(2) = 2(2)^2 -3(2) -4\r \n" ); document.write( "\n" ); document.write( "g(2) = 8 - 6 - 4\r \n" ); document.write( "\n" ); document.write( "g(2) = 8 - 10\r \n" ); document.write( "\n" ); document.write( "g(2) = -2\r \n" ); document.write( "\n" ); document.write( "We now plug -2 for x in the function f(x).\r \n" ); document.write( "\n" ); document.write( "Let x = -2\r \n" ); document.write( "\n" ); document.write( "f(x)=-4x^2+5x+3 \r \n" ); document.write( "\n" ); document.write( "f(-2) = -4(-2)^2 + 5(-2) + 3\r \n" ); document.write( "\n" ); document.write( "Simplify the above for f(-2) and you will find your answer.\r \n" ); document.write( "\n" ); document.write( "Understand? \n" ); document.write( " |