C²+5c-24=0 cant figure out how to solve this

Just solve the quadratic, you need to figure out what value you can use to FOIL and get c^2+5c-24=0. so you need to figure out what values you can add together to get 5 and multiply together to get -24 so try (c+8)(c-3) here 8 and 3 make sense since 8-3 = 5 and 8*-3=-24 so the answer is (c+8)(c-3).

Move the 24 to the other side and that's the farthest it simplifies

The correct answer would be d.(0,5)