8
(x - 1)(x + 2)
= x^2 + 2x - x - 2
= x^2 + x - 2
Added 9/10/2014 1:19:06 AM
This answer has been confirmed as correct and helpful.
8
(9 - 5x)^2
= (-5x + 9)(-5x + 9)
= 25x^2 - 45x - 45x + 81
= 25x^2 - 90x + 81
Added 9/10/2014 1:20:18 AM
This answer has been confirmed as correct and helpful.
5
(x-1)(x+2) using the foil method, we get x^2+2x-x-2
=x^2-x-2
And for the (9-5x)^2, the expanded form would be 25x^2-90x+81.
Added 2/15/2012 10:42:42 PM
This answer has been flagged as incorrect.
