document.write( "Question 426661: subtract
\n" ); document.write( "(7m^2-20)-(4m^2-4)=\r
\n" ); document.write( "\n" ); document.write( "also please explain how I should do this
\n" ); document.write( "thankyou so much
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Algebra.Com's Answer #296776 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi
\n" ); document.write( "simplifying by removing the parenthesis and combining Like terms
\n" ); document.write( "(7m^2-20)-(4m^2-4) |both parenthesis in this example have a coefficient of 1
\n" ); document.write( "1*(7m^2-20)-1*(4m^2-4)
\n" ); document.write( " 7m^2 - 20 - 4m^2 + 4 |combining Like terms
\n" ); document.write( " 3m^2 - 16 \n" ); document.write( "
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