x la puterea 4-9x la puterea a 2 + 3x la puterea a 2 -27-x la puterea 3-x la puterea 2+2x(xla puterea 2 - 4x+4)= x la puterea a 4-9x la puterea 2 +3x2-27-x la puterea 3 -x la puterea 2 + 2 x la puterea 3-8x la puterea 2+8 x=x la puterea 4- 15x la puterea 2-27+x la puterea 3 +8 x