document.write( "Question 116473: Determine whether each of the following trinomials is a perfect square. If it is, factor the trinomial.\r
\n" ); document.write( "\n" ); document.write( "16x^2+40xy+25y^2
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Algebra.Com's Answer #84694 by jpa65@hotmail.com(9)\"\" \"About 
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It is a perfect square because 16 and 25 are perfect squares. So it would simplify to...
\n" ); document.write( "(4x+5y)^2
\n" ); document.write( "Then check.
\n" ); document.write( "(4x)^2=16x^2
\n" ); document.write( "(5y)^2=25y^2
\n" ); document.write( "Heres where you must memorize for perfect square problems.
\n" ); document.write( "(a+b)^2=a^2+2ab+b^2. So...
\n" ); document.write( "2(4x+5y)=40xy
\n" ); document.write( "There you go. Hope this helps.
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