document.write( "Question 181812: 27a^3 - 343b^3
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Algebra.Com's Answer #136435 by Mathtut(3670) $\"\"$ $\"About$

You can put this solution on YOUR website!
lets rewrite this
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\n" ); document.write( " $\"%283a%29%5E3-%287b%29%5E3\"$ now we see this is the difference of cubes
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\n" ); document.write( "of the form $\"a%5E3-b%5E3\"$ in our case a is 3a and b is 7b
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\n" ); document.write( " $\"highlight%28%283a-7b%29%289a%5E2%2B21ab%2B49b%5E2%29%29\"$ just plugging in to the difference of cubes formula \n" ); document.write( "

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