document.write( "Question 1002411: 21b^2-66b^2+9b= \n" ); document.write( "
Algebra.Com's Answer #619350 by fractalier(6550)\"\" \"About 
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21b^2-66b^2+9b=
\n" ); document.write( "Combine b^2 terms and get
\n" ); document.write( "-45b^2 + 9b
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