Practice problem
Factor: 4x2−4x−84x^2-4x-84x2−4x−8
4(x2−x−2)4(x^2-x-2)4(x2−x−2)
4x(x−x−2)4x(x-x-2)4x(x−x−2)
2(2x2−x−4)2(2x^2-x-4)2(2x2−x−4)
4(x+1)(x+2)4(x+1)(x+2)4(x+1)(x+2)
Type a concept, like “slope” or “photosynthesis”.