document.write( "Question 89354: Okay, I am completely confused here....x^2+18x+81 is a perfect square because (x+9)(x+9), However, I need help with figuring out if x^2-2x-1 is a perfect square, so far I am thinking that it's not? But is it? Please help...Thanks \n" ); document.write( "
Algebra.Com's Answer #64914 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! No. It would have to be x^2-2x+1 which is (x-1)(x-1) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |