14-7x = 7(2-x)a(b-c) - 3(b-c) = (a-3)(b-c)a^3b^2 - a^2b^3 = a^2b^2(a-b)x(3+y) + 3 + y = x(3+y) + 3 + y(a+3)^2 - (a+3)a = (a+3)(a+3 - a) = (a+3)(3) = 3(a+3)
14-7x = 7(2-x)
a(b-c) - 3(b-c) = (a-3)(b-c)
a^3b^2 - a^2b^3 = a^2b^2(a-b)
x(3+y) + 3 + y = x(3+y) + 3 + y
(a+3)^2 - (a+3)a = (a+3)(a+3 - a) = (a+3)(3) = 3(a+3)