Factor the expression 8q^6r^3+27s^6t^3

Find the coordinates of p so that p partitions AB in the ratio 1 to 3 with a(-5,4) and(7,-4) Step-by-step explanation:
8q^6r^3+27s^6t^3
this is the sum of cubes: a^ 3 + b^ 3 = (a + b) (a^ 2 − a b + b^ 2 )
where a = 2q^2r and b=3s^2t
(2 q^2 r + 3 s^2 t) (4 q^4 r^2 - 6 q^2 r s^2 t + 9 s^4 t^2)