1)(х+8)*(2х-9)=0
2)-0,5(-10)^3-700

1) (x+8)(2x-9)=0x₁ + 8 = 0x₁ = -82x₂ - 9 = 0x₂ = 4,5Ответ: -8 и 4,52)-0,5*(-10)³ - 700 = 0,5*1000 - 700 = 500 - 700 = -200