Question

factories by splitting the middle term z²-4z-12​

Answer 1

z2-4z-12
z2-6z+2z-12
z( z-6)+2(z-6)
(z+2)(z-6)
either z=-2 or z=6
hope this helps you

Answer 2

Step-by-step explanation:

$x { }^{2} + 6x - 2x - 12 = 0 \: \: \: \: \: x(x + 6) - 2(x + 6) = 0 \: \: \: \: \: x + 6 = 0 \: orx - 2 = 0$