(m+4)^2 (c-b)^2 (x+y)^2 (p-q) ^2 (a-3)^2 (b+4)^2
1) m^2+8m+16 2)c^2-2cb+b^2 3)x^2+2xy+y^2 4)p^2-2pq+q^2 5)a^2-6a+9 6)b^2+8b+16b