document.write( "Question 335553: if f(x)= 3x-x^2 find the following f(3)-f(1) \n" ); document.write( "
Algebra.Com's Answer #240538 by solver91311(24713)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Substitute 3 for the variable and do the arithmetic.\r
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\n" ); document.write( "\n" ); document.write( "Substitute 1 for the variable and do the arithmetic\r
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\n" ); document.write( "\n" ); document.write( "Subtract your second result from the first.\r
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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