document.write( "Question 881924: multiply (2y^2-1)(2y^2+1) \n" ); document.write( "
Algebra.Com's Answer #532595 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
ERROR Algebra::Solver::Engine::invoke_solver_noengine: solver not defined for name 'foil'.\n" ); document.write( "\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "
Error occurred executing solver 'foil' .

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\n" ); document.write( "\n" ); document.write( "note: this is a difference of squares \"%28a-b%29%28a%2Bb%29+=+a%5E2-b%5E2\" so you can use this special formula
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