if you take a factor of (Y) you end up with Y(X+5Z-2).
5(x+5yz)
16x subtracted by 25xy = -9
(a + 6)(a + 4)
If that's -18y2, the answer is (3x - 2y)(x + 9y)
X=5
The LCM of 25xy and 200xy is 200xy.
p2+10d+7
(x+5)(x+3)
To raise to a power it's a lot clearer if you use ^ on a PC. For example, x^2 for x squared. I think you want to factorise 4x^2 - 25(y^2)(z^2). We recognise this as a difference of squares: (2x)^2 - (5yz)^2 and so it factorises as (2x - 5yz)(2x + 5yz).
4c(-sq+2)
the answer is x(3+y)