(a+b+c) (a+b-c)
a(c+d)+b(c+d)=(a+b)(c+d)
(a + b)(b + c)
0
ac - 3ad - 2bc + 6bd = a(c - 3d) - 2b(c - 3d) = (a - 2b)(c - 3d)
(2a + c)(4a2 - 2ac + c2)
(c - z)(c^2 + cz + z^2)
(c + 2)(c + 2) or (c + 2)2
(a+b+c) (a+b-c)
no
a(c+d)+b(c+d)=(a+b)(c+d)
3a(b+c)+2b(b+c)
(c + d)(c + d)
a3+b3+c3+3a2b+3a2c+3b2c+3ab2+3ac2+3bc2+6abc
(a + b)(b + c)
(c - 2)(c - 3)
(a + 2b)(c + 2d)