document.write( "Question 257957: determine whether the given expression is a polynomial. if it is, write it in standard form.\r
\n" ); document.write( "\n" ); document.write( "1.1+x^2+2x\r
\n" ); document.write( "\n" ); document.write( "2. x- 1/x\r
\n" ); document.write( "\n" ); document.write( "3. x^-2+ 3x+5\r
\n" ); document.write( "\n" ); document.write( "4. 3x^4+x^7+3x^5-2x+1
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Algebra.Com's Answer #190045 by drk(1908)\"\" \"About 
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1.1+x^2+2x
\n" ); document.write( "ANSWER: YES
\n" ); document.write( "x^2 + 2x + 1
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\n" ); document.write( "2. x- 1/x
\n" ); document.write( "ANSWER: NOT a polynomial ; variable in denominator.
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\n" ); document.write( "3. x^-2+ 3x+5
\n" ); document.write( "ANSWER: NOT a polynomial; variable has negative exponent
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\n" ); document.write( "4. 3x^4+x^7+3x^5-2x+1
\n" ); document.write( "ANSWER: YES
\n" ); document.write( "x^7 + 3x^5 + 3x^4 - 2x + 1
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