Question 38627
xa + 2bx - a - 2b
x(a+2b) -1(a+2b)
(a+2b)(x-1)


Your second problem looks strange.  Are you sure you meant x^y ???  If that is what you REALLY mean, then here goes.  Factor out a common factor of 7 and x:

14x^y - 35xy - 63x
{{{7x(2x^(y-1) - 5y - 9) }}}


Somehow, I don't think this is what you really meant, however.


R^2 at SCC