document.write( "Question 200071: factor this expression:
\n" ); document.write( "x^4 + 4y^4
\n" ); document.write( "

Algebra.Com's Answer #150420 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
nerdybill's answer doesn't work.
\n" ); document.write( "That product is x^4 - 4y^4, not plus.
\n" ); document.write( "
\n" );