document.write( "Question 367075: Investigate to see if (2x+5) is a factor of 2x^3-3x^2-12x+20=0
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Algebra.Com's Answer #261720 by Fombitz(32388) $\"\"$ $\"About$

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If $\"2x%2B5\"$ is a factor, then
\n" ); document.write( " $\"2x=-5\"$
\n" ); document.write( " $\"x=-5%2F2\"$ is a zero.
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\n" ); document.write( " $\"graph%28300%2C300%2C-4%2C2%2C-3%2C3%2C0%2C2x%5E3-3x%5E2-12x%2B20%29\"$
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\n" ); document.write( "It looks promising.
\n" ); document.write( "For complete verification, plug $\"x=-5%2F2\"$ into the equation and verify that the output is equal to zero.
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