document.write( "Question 660457: (4x + 1) (4X - 1) \n" ); document.write( "
Algebra.Com's Answer #411193 by ReadingBoosters(3246)\"\" \"About 
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FOIL - first, outside, inside, last
\n" ); document.write( "(4x)(4x) + (4x)(-1) + (1)(4x) + (1)(-1)
\n" ); document.write( "16x^2 - 4x + 4x - 1
\n" ); document.write( "Combine like terms
\n" ); document.write( "16x^2 - 1
\n" ); document.write( "
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