(2x+3)(4x²-6x+9)-8x(x²-1)=5
(2x+3)(4x²-6x+9)-8x(x²-1)=5 8x²+27-8x³+8x=5 27+8x=5 8x= 5-27 8x=-18 x=-11/4= -2 3/4= -2,75