document.write( "Question 554159: find the values of a for which the statement is always true when x is a whole number. explain your reasoning.
\n" ); document.write( "- 2x + a is odd\r
\n" ); document.write( "\n" ); document.write( "- -ax^2 is nonnegative\r
\n" ); document.write( "\n" ); document.write( "- 3x + a is divisible by 3
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Algebra.Com's Answer #361315 by richard1234(7193)\"\" \"About 
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-2x + a: Note that -2x is always even. Therefore a must be an odd integer.\r
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\n" ); document.write( "\n" ); document.write( "-ax^2: x^2 is nonnegative, so -x^2 is non-positive; setting makes the expression nonnegative.\r
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\n" ); document.write( "\n" ); document.write( "3x + a: 3x is already divisible by 3, so a must also be divisible by 3.
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