document.write( "Question 1208241: f(x)=10x^(2)+13x-3, g(x)=5x+1. find (f o g)(x) \n" ); document.write( "

Algebra.Com's Answer #846534 by ikleyn(52780) $\"\"$ $\"About$

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\n" ); document.write( "f(x)=10x^(2)+13x-3, g(x)=5x+1. find (f o g)(x)
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document.write( "To get (f o g)(x), we should replace x in the formula\r\n" );
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document.write( "    f(x) = 10x^(2)+13x-3\r\n" );
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document.write( "by 5x+1.  Doing it mechanically, we get\r\n" );
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document.write( "    (f o g)(x) = 10*(5x+1)^2 + 13*(5x+1) - 3 = 10*(25x^2 + 10x + 1) + 65x + 13 - 3 = \r\n" );
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document.write( "               = 250x^2 + 100x + 10 + 65x + 10 = 250x^2 + 165x + 20.    ANSWER\r\n" );
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