document.write( "Question 983431: IF THE SUM OF TWO NUMBERS IS 7 AND THE SUM OF THEIR CUBES IS 133 FIND THE SUM OF THEIR SQUARES? \n" ); document.write( "
Algebra.Com's Answer #604227 by Alan3354(69443)\"\" \"About 
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IF THE SUM OF TWO NUMBERS IS 7 AND THE SUM OF THEIR CUBES IS 133 FIND THE SUM OF THEIR SQUARES?
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\n" ); document.write( "They're small numbers, to trial and error is the easiest way.
\n" ); document.write( "1 & 6 --> 1 + 216 = 217 NG
\n" ); document.write( "2 & 5 --> 8 + 125 = 133
\n" ); document.write( "You can find the squares of 2 & 5.
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\n" ); document.write( "If the numbers were larger, or not integers:
\n" ); document.write( "x + y = 7
\n" ); document.write( "x^3 + y^3 = 133
\n" ); document.write( "Sub for y, y = 7-x
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\n" ); document.write( "x^3 + (7-x)^3 = 133
\n" ); document.write( "\"x%5E3+%2B+343+-+147x%5E2+%2B+147x+-+x%5E3+=+133\"
\n" ); document.write( "\"147x%5E2+-+147x+-+210+=+0\"
\n" ); document.write( "\"7x%5E2+-+7x+-+10+=+0\"
\n" ); document.write( "It's easy to solve for x when you know the answer.\r
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