Hello,Originally Posted by soca615
to factorize those expressions use the the rule of Vieta:
2) Isn't correct, sorry.Originally Posted by earboth
doesn't factor over the reals. The way I would approach this, then would be to set . The solution is , so
, or you can take the square root of (i.e. solve for c, not ) and string the four factors together. Don't forget the extra 9!