document.write( "Question 443671: Add the polynomials. Show all work.
\n" ); document.write( "(sn-4n^2+7)+(7n^2+5n-6)
\n" ); document.write( "Subtract the polynomials. Show all work.
\n" ); document.write( "(7y^3+4y^2-5y+3)-(8y^3-4y^2-2y+2) \n" ); document.write( "

Algebra.Com's Answer #305970 by oberobic(2304) $\"\"$ $\"About$

You can put this solution on YOUR website!
Adding.
\n" ); document.write( " $\"%28sn-4n%5E2%2B7%29%2B%287n%5E2%2B5n-6%29\"$
\n" ); document.write( "Assuming \"sn\" is really 2n, and that each = 0.
\n" ); document.write( "Reorganize the first equation to align the elements.
\n" ); document.write( " $\"2n-4n%5E2%2B7+=+0\"$
\n" ); document.write( " $\"-4n%5E2+%2B2n+%2B+7+=+0\"$
\n" ); document.write( "Add
\n" ); document.write( " $\"-4n%5E2+%2B2n+%2B+7+=+0\"$
\n" ); document.write( " $\"7n%5E2+%2B+5n+-6+=+0\"$
\n" ); document.write( " $\"3n%5E2+%2B+7n+%2B+1+=+0\"$
\n" ); document.write( ".
\n" ); document.write( "Subtracting
\n" ); document.write( " $\"7y%5E3%2B4y%5E2-5y%2B3+=+0\"$
\n" ); document.write( " $\"8y%5E3-4y%5E2-2y%2B2+=+0\"$
\n" ); document.write( " $\"-y%5E3+%2B8y%5E2+-3y+%2B+1+=+0\"$
\n" ); document.write( ".
\n" ); document.write( "Done \n" ); document.write( "

\n" );