document.write( "Question 780299: Can you factor 7a^3 + 28a? \n" ); document.write( "
Algebra.Com's Answer #475534 by stanbon(75887)\"\" \"About 
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Can you factor 7a^3 + 28a?
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\n" ); document.write( "Common factor:: 7a
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\n" ); document.write( "= 7a(a^2+4)
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\n" ); document.write( "If you allowed to factor over the complex numbers you get:
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\n" ); document.write( "= 7a(a+2i)(a-2i)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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