First expand the expression and move the #-5# to the left hand side, to get it into standard form #-4(x^2+4x+4) +3x +5 = 0# #-4x^2 -16x -16 +3x +5 = 0# #-4x^2 -13x -9 = 0# #-(4x^2 +13x+9)=0# #4# and #9# add to give #13#, so the factors we need are #4&1# and #9&1# #-(4x +9)(x+1) = 0# #:. x = -9/4# or # x=-1#