document.write( "Question 171720: 3. (7a4 + 8ab + b2) + (-5a4 - 8ab - 4b2) \n" ); document.write( "
Algebra.Com's Answer #126943 by checkley77(12844)\"\" \"About 
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(7a4 + 8ab + b2) + (-5a4 - 8ab - 4b2)
\n" ); document.write( "7a^4+8ab+b^2
\n" ); document.write( "-5a^4-8ab-4b^2
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\n" ); document.write( "2a^4-3b^2 ans.
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