1) a^2 - 16 = (a - 4)(a + 42) 4a^3m - am^3 = am(4a^2 - m^2) = am(2a + m)(2a - m3) x^2 + 4x + 4 = (x + 2)(x + 2) = (x + 2)^2
1) a^2 - 16 = (a - 4)(a + 4
2) 4a^3m - am^3 = am(4a^2 - m^2) = am(2a + m)(2a - m
3) x^2 + 4x + 4 = (x + 2)(x + 2) = (x + 2)^2