2х² – 3х = 0
x(2x – 3) = 0
x = 0 ⇒ x₁ = 0
2x – 3 = 0 ⇒ x₂ = 3/2
х² – 81 = 0
(x + 9)(x – 9) = 0
x + 9 = 0 ⇒ x₁ = –9
x – 9 = 0 ⇒ x₂ = 9
2х² – 3х = 0
x(2x – 3) = 0
x = 0 ⇒ x₁ = 0
2x – 3 = 0 ⇒ x₂ = 3/2
х² – 81 = 0
(x + 9)(x – 9) = 0
x + 9 = 0 ⇒ x₁ = –9
x – 9 = 0 ⇒ x₂ = 9