document.write( "Question 898711: \"21n%5E2-28n-28=0\"
\n" ); document.write( "I do not understand how to solve.
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Algebra.Com's Answer #545080 by Jc0110(165)\"\" \"About 
You can put this solution on YOUR website!
\"21n%5E2-28n-28=0\" ... The whole equation can be simplified by dividing 7.
\n" ); document.write( "\"3n%5E2-4n-4=0\" ... This quadratic equation can be solved by using 3 methods, which are Factorization, Quadratic formula or Completing the Square.\r
\n" ); document.write( "\n" ); document.write( "Factorization method is being used here.
\n" ); document.write( "\"%283n%2B2%29%28n-2%29=0\"
\n" ); document.write( "\"n=-2%2F3\" or \"2\"
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