document.write( "Question 878715: x^2 + 19x + 92 = whole square of an integer when x is integer
\n" ); document.write( "find x
\n" ); document.write( "Attempted-
\n" ); document.write( "let a be the integer
\n" ); document.write( "x^2+19x+92-a^2=0
\n" ); document.write( "Discriminant>=0
\n" ); document.write( "361-4(92-a^2)>=0
\n" ); document.write( "4a^2>=7
\n" ); document.write( "a^2>=4/7
\n" ); document.write( "a<=-sqrt(7)/4 and a>=sqrt(7)/4
\n" ); document.write( "but a is integer
\n" ); document.write( "therefore a<=-2 or a>=2 \n" ); document.write( "

Algebra.Com's Answer #530220 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
(I had posted something here but removed it - please excuse, and repost) \n" ); document.write( "

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