I need help with this question i don’t understand it

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

(fog)(x) if f(x)=x^2- 4 and g(x)=x^2 + 2 x, f(g(x))= f(x^2+2x) (x^2+2x)^2-4 (x^2+2x)(x^2+2x)-4 (x^4+2x^3+5x+4x^2)-4 x^4+2x^3+4x^2+5x-4 what am i doing wrong