document.write( "Question 970836: (a+b+c)(b+c-a)(c+a-b)(a+b-c)
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Algebra.Com's Answer #593473 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "\"%28a%2Bb%2Bc%29%28b%2Bc-a%29%28c%2Ba-b%29%28a%2Bb-c%29+\"................multiply first two and then second two\r
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\n" ); document.write( "\n" ); document.write( "\"%28-a%5E2%2Bb%5E2%2B2bc%2Bc%5E2%29%28a%5E2-b%5E2%2B2bc-c%5E2%29\".....multiply these two and you will get\r
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\n" ); document.write( "\n" ); document.write( "\"-a%5E4%2B2a%5E2+%2Ab%5E2%2B2a%5E2%2A+c%5E2-b%5E4%2B2b%5E2%2Ac%5E2-c%5E4\"
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