Question 438539
I believe this technique is called the "British" method (maybe it is primarily taught there)


(A)  multiply the first and last terms ___ (18x^2)(-24) = -432x^2
  ___ factor -432x^2 so that the sum of the factors will be the middle term (-11x)   ___ (-27x) + (16x) = -11x
  ___ use the factors for a grouping solution ___ (18x^2 - 27x) + (16x - 24) ___ [9x(2x - 3)] + [8(2x - 3)]


(9x + 8)(2x - 3)