document.write( "Question 285425: Having issues solving this one: (x-5)²-6(x-5)+8. I came up with the answer (x-11)(x+3) but that's not the right answer...please help. Used the u²+bu+c formula and Im missing something here. \n" ); document.write( "
Algebra.Com's Answer #206895 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "let's say u= (x-5) \n" ); document.write( "u^2-6u+8 \n" ); document.write( "factors are -4 and -2 \n" ); document.write( "(u-4)*(u-2) \n" ); document.write( "now substitute x-5 for u \n" ); document.write( "(x-5-4)*(x-5-2) \n" ); document.write( "(x-9)*(x-7) \n" ); document.write( "Which works. \n" ); document.write( "I can't for the life of me think how you got (x-11) and (x+3).\r \n" ); document.write( "\n" ); document.write( "if you had calculated out the original expression you should have gotten \n" ); document.write( "x^2-16x+63 \n" ); document.write( "which also factors to (x-9)(x-7) \n" ); document.write( " \n" ); document.write( " |