а) x² + 2x² = 3x² = x² = x = 0
б) (x-6)² + 2x(x-6) = x² - 12x + 36 + 2x² - 12x = 3x² - 24x + 36 = x² - 8x + 12 = (x - 6)(x - 2) = x = 6, x = 2
в) x³ - 3x² = x²(x - 3) = x² = 0, x - 3 = x = 0, x = 3
г) (x + 4)² - 3x(x + 4) = x² + 8x + 16 - 3x² - 12x = -x² - 4x + 16 = x² + 4x - 16 = (x + 8)(x - 2) = x = -8, x = 2
а) x² + 2x² =
3x² =
x² =
x = 0
б) (x-6)² + 2x(x-6) =
x² - 12x + 36 + 2x² - 12x =
3x² - 24x + 36 =
x² - 8x + 12 =
(x - 6)(x - 2) =
x = 6, x = 2
в) x³ - 3x² =
x²(x - 3) =
x² = 0, x - 3 =
x = 0, x = 3
г) (x + 4)² - 3x(x + 4) =
x² + 8x + 16 - 3x² - 12x =
-x² - 4x + 16 =
x² + 4x - 16 =
(x + 8)(x - 2) =
x = -8, x = 2