document.write( "Question 713294: if 21^3 + 23^3= 21428, then 20*21*22 + 22*23*24= \n" ); document.write( "

Algebra.Com's Answer #438359 by checkley79(3341) $\"\"$ $\"About$

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21^3 + 23^3= 21428
\n" ); document.write( "9,261+12,167=21,428
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\n" ); document.write( "then 20*21*22 + 22*23*24=
\n" ); document.write( "9,240+12,144=21,384 ANS.
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\n" ); document.write( "9,261-9,240=21 NOTE THIS IS THE MIDDLE INTEGER.
\n" ); document.write( "12,167-12,144=23 NOTE THIS IS THE MIDDLE INTEGER.
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\n" ); document.write( "21,428-21,384=44 NOTE THIS IS THE SUM OF 21+23=44.
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