Question

(2х-3)(4х2+6х+9)-8х3=2,7х

Answer 1

$(2x - 3)(4 {x}^{2} + 6x + 9) - 8x {}^{3} = 2.7x \\ 8 {x}^{3} - 27 - 8 {x}^{3} = 2.7x \\ - 27 = 2.7x \\ x = - 10$
(2x-3)(4x²+6x+9)-8x³=2,7x
8x³-27-8x³=2,7x
-27=2,7x
x=-10