document.write( "Question 1145882: If ( x+3y)^2=x^2+9y^2+42 what is the value of x^2y^2 \n" ); document.write( "
Algebra.Com's Answer #767150 by math_helper(2461)\"\" \"About 
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49\r
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\n" ); document.write( "Expand (x+3y)^2 then compare term by term with x^2+42+9y^2 and it will be clear.
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